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The nominal exchange rate is determined by supply and demand.

Money is an asset whose quantity is determined by government policy.

In economies where exports and imports are large relative to GDP, movements in the exchange rate can have major effects on aggregate output and the aggregate price level.

Britain, Canada, and the United States follow this policy.

At times, countries have adopted compromise policies that are between fixed and floating exchange rates.

The two main exchange rate regimes will be the focus of the book.

To understand how it is possible for a country to fix its exchange rate, let's consider a hypothetical country, Genovia, which has decided to fix the value of its currency, the geno, at US $1.

The equilibrium value of the geno is below the tar get exchange rate.

The Genovian government can buy genos and sell U.S. in the imaginary country of Genovia.

The Genovian government can sell foreign exchange market if there is a surplus of genos.

The Genovian government can support the geno by buying its own currency in the foreign exchange market.

The purchase and sale of foreign assets by governments and central banks is an important part of international capital flows.

Let's discuss the other ways governments fix exchange rates.

The Genovian government can support the geno by shifting the supply and demand curves in the foreign exchange market.

The Genovian central bank can raise the interest rate to support the geno.

This will increase capital flows into Genovia, increasing the demand for genos, at the same time that it reduces capital flows out of Genovia, reducing the supply of genos.

It can be done by requiring domestic residents who want to buy foreign currency to get a license and giving these licenses only to people engaged in approved transactions, such as the purchase of imported goods the Genovian government thinks are essential.

We've been talking about a situation in which the government is trying to prevent people from buying foreign currency.

The Genovian government can apply the same three options in the reverse direction.

There are a lot of arguments about whether a country should adopt a fixed or floating exchange rate.

There are a number of things that make interstate commerce trouble, but one of them is the lack of uncertainty about the value of money in New York City and Los Angeles.

One benefit of a fixed exchange rate is certainty about the future value of the currency.

Argentina adopted a fixed exchange rate of US$1 per Argentine peso in 1991, in order to commit itself to non-inflationary policies in the future, after a long history of irresponsible policies.

If a country chooses to fix the exchange rate by adjusting monetary policy, it must divert monetary policy from other goals such as stabilizing the economy and managing the inflation rate.

Foreign exchange controls distort incentives for imports and exports.

China provided a striking in the early years of keeping the exchange rate fixed.

China's spectacular market intervention, selling yuan, success as an exporter led to a ris buying up other countries' currencies and a surplus on the current account.

Adding private investors made the non- Chinese exchange market more stable.

China added $510 billion to its foreign Chris Cameron/Alamy to take advantage of its growing exchange reserves, bringing the country a history of intervention in its domestic economy.

You have to know that in relatively cheap for foreign consumers coming in anyway to get a sense of how big its currency is.

The Chi ment had bought $900 billion worth of sitting on a foreign government, which was determined in a single year in two different currencies.

We will look at macroeconomic policy under each exchange rate regime.

Britain was the most important of these, but other European countries decided that the euro was not for them.

If Britain gave up the pound, it would have to give up currency that bears the portrait of the queen.

There were serious economic concerns about giving up the pound in favor of the euro.

British economists who favored adoption of the euro argued that if Britain used the same currency as its neighbors, the country's international trade would expand and its economy would become more productive.

The euro would take away Britain's ability to have an independent monetary policy and could lead to macroeconomic problems, according to other economists.

The fact that modern economies are open to international trade and capital flows adds a new level of complexity to our analysis of macroeconomic policy.

Fixed exchange rates have not been permanent commitments in the past.

In the next box, you'll find a discussion of such adjustments in the target during theBretton Woods era.

A revision in the fixed exchange rate regime causes a depreciation.

Domestic goods are cheaper in terms of eign currency, which leads to higher exports.

A decrease in the value of a currency increases the balance of payments on the current account.

A revaluation makes exports increase because they domestic goods are more expensive in terms of foreign currency, which reduces exports, and makes foreign goods cheaper in domestic currency, which increases imports.

A revaluation of a currency reduces the balance of payments on the current account.

They can be used to eliminate shortages in the foreign exchange market.

In 2010, some economists urged China to revalue the renminbi so that it wouldn't have to buy so many U.S. dollars on the foreign exchange market.

The tools of macroeconomic pol icy can be used with devaluation and revaluation.

A recessionary gap can be reduced or eliminated by a devaluation.

The exchange mark ceased to exist at the end of 2001 and the nations met in a new location.

The international monetary system of fixed periods has not been used in the transition to the euro.

The Exchange Rate Mechanism broke down in 1971 after sharing the same monetary at first.

The policy makers tried to change the rate to 3.4 Swiss Francs per same, but it wasn't successful.

By 1973, the most economically reflect two currency crises--episodes stresses within the eurozone between advanced countries had moved to in which widespread expectations of 2008 and 2012 when the global finan floating exchange rates.

The history of European exchange rate arrangements is shown in the accompanying figure.

The effects of monetary policy are affected by the exchange rate.

If the central bank cuts the interest rate, what will happen to the country of Genovia?

In a closed economy, a lower interest rate leads to higher investment and consumer spending.

The foreign exchange market is affected by the interest rate decline.

Foreigners don't have as much incentive to move funds into Genovia because of the lower rate of return on their loans.

Investments outside the country are more attractive due to the fall in international trade and finance at home.

The key point is that changes in aggregate demand affect the demand for goods and services produced abroad as well as at home: other things equal, a recession leads to a fall in imports and an expansion leads to a rise in imports.

The extent of this link depends on the exchange rate regime.

If AP Images reduces the demand for Genovia's exports, there will be a recession.

Trading partners tend to import demand for genos on the foreign exchange market.

The quantity of goods and services exported doesn't fall as much as it would under a fixed rate because Genovian goods and services become cheaper to foreigners when the demand for exports falls.

The effects limit the decline in Genovia's aggregate demand compared to what it would have been under a fixed exchange rate regime.

According to their advocates, floating exchange rates help insulate countries from recessions that originate abroad.

The euro was ation in 1999 because of speculation that the foreign reserves rates that paved the way for the cre dwindled.

Secretary claimed to be happy to help fight inflation.

The government wasn't able to value intervention to support the pound's next two years.

Reducing British share in the improving employment value of the pound would be achieved if one person did not have high interest rates.

In the summer of 1992, inves no longer had a fixed exchange rate.

The Open Economy: International Trade and Finance out of a recession that affected the rest of Europe, and Canada, which also has a floating rate, suffered a less severe recession than the United States.

The financial crisis that began in the United States produced a domino effect throughout the world.

It appears that the international linkages between financial markets were stronger than the insulation provided by floating exchange rates.

The target rate was argued for by Canadian economists in the late 1980s.

The fi xed exchange rate level is shown in the world.

The government's buying the fi xed exchange rate if you cross the supply curve at your graph.

The axes show the equilibrium exchange rate and equi librium quantity of dollars at the point where the supply and demand curves intersect.

specialization and trade make larger quantities of goods and services available to consumers.

Many countries have experimented with closed economies, and the gains from trade are often overlooked.

There are several factors that affect a country's approach to trade.

Special circumstances can limit the options for trade beyond the natural tendency for each country to want to make everything.

For countries with primitive transportation systems and countries that specialize in heavy, low-priced commodities such as bricks, drinking water, watermelons, or sand, high transportation costs hinder trade.

As a matter of national pride, countries may prefer to make certain products on their own, even though they have comparative disadvantages, such as food, art, weapons, and products that showcase technical know-how.

The unemployment rates in Campbellsville and the United States as a whole rose only temporarily.

Many of these workers were able to adapt to the requirements of growing industries such as construction, automotive parts, health care, and software design, and were able to secure new jobs as a result.

The good news is that tariffs can lead to trade wars.

The use of tariffs waned as the benefits of free trade came to light.

If the United States had a closed economy, 5 million plates would sell for $15 each.

Domestic firms would not be able to charge more than the world price without trade restrictions.

If the U.S. imposes a tariffs on imported ceramic plates, you may need to show it.

Americans consume about 11 million tons of sugar each year.

The United States has an import quota of 2 million ceramic plates.

That quota would prevent a trade equilibrium at the intersection of U.S. consumers' demand and the supply from the rest of the world because it would require imports of 4 million plates.

The pink U.S.-plus-quota supply curve does not extend below a price of $9 because imports would not be available for less than that.

Retributive actions are common when one country erects a trade barrier.

The agreements can provide benefits to citizens in participating countries.

The two largest econo partners can agree to accept each other's victims as a result of the reduction of trade barriers.

Work mies in the world may lose their jobs if they trade more with each other than they do with the specific tests and guidelines.

Analysts think that the TTIP will reach its full potential.

The average could be a win-win for the citizens of the United States and the Euro workers as they transition from 4% to 2% unemployment.

Regulations and bureaucratic red pean Union, adding between $545 tries that are contracting to industries tape add to the barriers that restrict and $900 to the disposable annual that are growing.

The growing popularity of the United States and the European economy have an effect on the income of a typical family of four.

The success of specializa food products and automobile safety makes it difficult to trade the tions and bureaucracy because of the differing regulations on gains.

The fourth round of talks between the United States and the Euro pean Union on the details of the TTIP took place in March of 2014).

Although it is relatively straight forward to eliminate tariffs as part of trade negotiations, differing regula tions pose larger challenges.

The Euro pean Union has stricter regulations on genetically modified crops than the United States.

The United States requires different safety tests for cars.

France has an import quota of 2 million pounds of cheese.

France imposed a tariffs of 4% on cheese instead of any other trade restriction.

The basic macroeconomic models can be used to analyze scenarios and evaluate policy recommendations.

There are models of aggregate demand and supply, production possibilities, money markets, and thePhillips curve that can be adapted.

By the end of this module, you will be able to combine mastery of macroeconomics with problem solving skills to analyze a new scenario on your own.

This could be a policy response to the initial situation or a change in the economy.

You might be asked to consider the following scenario and answer some questions.

Canada is the United States' largest trading partner.

Canada is the United States' largest trading partner.

The aggregate demand-aggregate supply model is often used to evaluate macroeconomic scenarios.

Perhaps a country goes into or recovers from a recession, inflation catches consumers off guard or becomes expected, consumers or businesses become more or less confident, holdings of money or wealth change, or oil prices plummet or spike.

Don't expect to analyze a familiar scenario on the exam with the infinite number of possible changes in policy, politics, the economy, and markets around the world.

It is relatively easy to identify how the given events affect the factors with these influences in mind.

There are five major factors that shift the demand curve and five major factors that shift the supply curve in the supply and demand model.

You can link specific events to relevant factors in the models to see what will happen.

The event is usually a policy response to an undesirable starting point such as a recessionary or inflationary gap.

Expansionary or contractionary fiscal policy can be implemented by raising or lowering taxes or government spending.

Fiscal and monetary policy affect the economy by changing the aggregate demand curve.

Canada is the United States' largest trading partner.

The economy will move to its long-run equilibrium after the short-run effects of any event have ended.

Negative or positive demand shocks can move the economy away from long-run macroeconomic equilibrium.

The Open Economy: International Trade and Finance will eventually be offset by changes in short-run aggregate supply due to changes in nominal wage rates.

Secondary effects will occur throughout the open economy if the short-run effects of an action result in changes in the aggregate price level or real interest rate.

In our scenario, a price level decrease will cause the domestic currency to appreciate on the foreign exchange market.

Aggregate demand is affected by interest rate changes.

Fiscal policy affects the federal budget in the long run.

The government's increased demand for loanable funds drives up the interest rate, decreases investment spending, and partially offsets the initial increase in aggregate demand.

The deficit could be addressed by printing money, but that would cause inflation in the long run.

Monetary policy affects the aggregate price level, not GDP.

The aggregate price level and nominal values will be affected by the same proportion.

A higher interest rate will cause a decrease in investment and consumer spending.

The decrease in the U.S. price level will make U.S. exports less expensive for Canadians to purchase and lead to an increase in demand for U.S. dollars.

You can use a correctly labeled aggregate demand-aggregate supply graph.

If there is an interest rate, use your graph to show the effect of a decrease in government spending on the real GDP and aggregate price level.

The horizontal axis is labeled "Aggregate increased U.S. energy prices on the demand for U.S." and the vertical axis is labeled "Aggregate price ket for U.S.

The equilibrium aggregate price level can be purchased in U.S. dollars.

Capital flows respond to international differences in their transactions.

Aggregate demand can be used to fix exchange rates.

Under floating exchange rates, expansionary mon domestic policies, especially monetary policy, to shift etary policy works in part through the exchange rate: the demand and supply curves in the foreign exchange cutting domestic interest rates leads to a depreciation, market.

Exchange rate policy has a dilemma: eco increases aggregate demand.

Exchange try's exports create a link between the business cycles controls and the fact that one country's imports are another intervention.

Revenue in the United States is based on the change in the value of the Chinese currency.

The survey found that price-gouging was fairly widespread in the United States.

For many, and why it is the best measure of how much vaccine is needed, the difference the quantity demanded responds to 50 million doses.

We will look at how the price and quantity of flu vaccine was bought by the country that jealously guards it.

It would not be possible to find a consumer will producer or overall welfare in a market.

The elasticity of basis of income and substitution demand is a measure of consumer effects on price changes.

We have drawn demand curves that are somewhere in the middle between steep and flat.

The individual demand curve, which relates an individual's consumption of a good to the price of that good, normally slopes downward, because it obeys the law of demand.

The way to think about why demand curves slope downward is to focus on opportunity costs.

The change in the price of a good makes it more attractive to buy more of it.

Food and housing account for a large share of consumers' incomes.

A family spends half of its income on rental housing.

The family will be poorer because of the higher housing price, in a change in the real sense.

The substitution effect is what causes most market demand curves to slope downward.

The substitution effect is reinforced by the reduction in the quantity demanded.

The point of the story is that the statistician thought that people were poorer because of the higher price of potatoes.

It's inconvenient to write a minus sign multiple times.

In the next module, we'll learn why Flunomics needed inelastic demand for its strategy to increase revenue by raising the price of its flu vaccines.

We'll see why it's important to focus on percent changes when we look at some other elasticities.

There is a technical issue that arises when you calculate percent changes in variables and how economists deal with it.

In Europe, gasoline costs three times as much as it does in the US because of high taxes.

The price of gasoline in Europe is three times higher than in the United States.

The price of gasoline in the United States is one-third higher than in Europe.

We would like to have an elasticity measure that doesn't depend on the direction of change.

The price elasticity of demand is calculated using the midpoint method.

The minus sign is dropped and the absolute value is reported when the price elasticity of demand is calculated.

Since rent is a big part of her income, she ordered to sell 5,000 tickets.

Housing is a normal good for the price elasticity of demand for ice cream sandwiches.

To calculate percent have less money to spend on weekend meals at changes, use Equations 46-1 and 46-2.

The income effect point method explains the demand curve's negative slope when a good absorbs only a small share of the quantity demanded from 100 to 120.

We need to look at the price elasticity of demand more closely to answer these questions.

When people pay no attention to its price, consider the demand for a good.

Consumers would buy 1 billion pairs of shoelaces every year regardless of the price.

The panel shows a perfectly elastic demand curve, which is a horizontal line.

Consumers will buy any quantity of 1 billion pairs regardless of price.

The number of pink tennis balls is shown in the panel.

Consumers will only buy pink balls if they cost less than $5 a dozen.

The demand curve will be a horizontal line at $5 per dozen balls.

The price elasticity of demand will cause the majority of goods to be somewhere between zero and zero.

The number of drivers who use the bridge depends on price elasticity of demand, which the toll, the price the highway department charges would determine the resulting for crossing the bridge: the higher the toll, the drop in use.

When the toll is raised from $0.90 to $1.10 and the inelastic demand curve is shown, I represent the vertical perfectly Panel.

A graphical representation of total revenue can help us understand why elasticity of demand is important when we ask if an increase in price will increase or reduce revenue.

The total revenue at any given price is the same as the height and width of the rectangle.

The following scenario gives an idea of why total revenue is important.

The highway department shouldn't confuse revenue with profit, since the toll on the bridge is currently $0.90.

Since a higher toll will reduce the number of people who use the bridge, this plan might backfire.

The highway department needs to know how drivers will respond to a toll increase.

If the strengths of the two effects are the same, total revenue is not affected by the price increase.

The quantity effect of more units sold tends to raise revenue.

The total revenue generated at each price is shown in the last column.

The data on total revenue is the same as it is in the lower panel: the height of a bar at each quantity demanded--which corresponds to a particular price--measures the total revenue generated at that price.

The upper left seg shows the elasticity of the demand curve from a price of $5 to $10 Some traveled to Canada and other countries to get the vaccine after paying high prices.

If there are other goods that consumers think are similar, the price elasticity of demand will be high.

If there are no close replacements, the price elasticity of demand is low.

If you need a life-saving medicine, the price elasticity of demand will be low.

If the good is a luxury, the price elasticity of demand is high.

A change in the price of the good doesn't affect how much the consumer spends.

The first time gasoline prices increased in the United States was in the 1970s.

A 1999 study confirmed that rising tuition does not keep people fromtern.

Two studies found that two-year college had fallen since 1988, but the answer depends on the type of enrollee.

The price increase in tuition led to a 2% fall in the number of students.

In the case of two, their own way of making trade institutions may be as low as 0.11.

An increase in Tuition and State Financial Aid for students at the unemployment rate leads to a College Enrollment.

The Review of Higher two-year colleges had a significant increase in the number of students.

"Rising Tuition and dents at four-year colleges" is a Marcotte article.

On your graph, show the half of the demand curve that is elastic.

We can look at how elasticity is used to understand the relationship between other important variables in economics now that we have used elasticity to measure the responsiveness of quantity demanded to changes in price.

If the goods are close replacements, the cross-price elasticity will be large, and if they are not, it will be small.

When the cross-price elasticity of demand is positive, its size is a measure of how close the two goods are.

In the case of the cross-price elasticity of demand, the sign (plus or minus) is very important in determining whether the two goods are complement or substitute.

The minus sign can't be dropped as we did for elasticity of demand.

It tells you if a good is normal or inferior and how much you should spend when your income goes up.

The relative farmers have fallen due to the combination of these effects.

Even if farming wasn't such a tech, the low income elasticity of the gressive sector for approximately 150 years in the United States would ensure that the income of farmers would increase over time.

Competition among farmers leads to lower food prices because techno with price-inelastic demand for farm products reinforces logical progress.

The U.S. farm sector has been a victim of success because of falling prices of food.

Progress in farming is good for consumers but bad for farmers.

Estimates of the income elasticity of demand are used by economists to predict which industries will grow the fastest.

The price would have been pushed back down if there had been an increase in flu vaccine production.

It would have been too costly and technically difficult to produce more vaccine for the 2004-2005 flu season, so that didn't happen.

The graphical representation of the price elasticity of supply is similar to that of demand.

The governments have the right to sell this part of the radio spectrum to cell phone operators inside their borders.

For technical reasons, governments can't increase or decrease the number of cell phone frequencies they have to offer.

The panel shows a perfectly inelastic supply curve.

The change in the quantity supplied by the government is zero as you move up and down that curve.

If necessary, more tomatoes, more milk, and more cheese could be produced, so that the price of good wouldn't change.

A perfectly inelastic supply quantity of pizzas would be elicited by allowing profits if the price was above $12.

Our cell phone frequencies and pizza examples show real-world instances of infinite above that price.

A perfectly elastic supply curve is easier to find than a horizontal line.

The price elasticity of supply is determined by the availability of inputs.

Time may also play a role in the price elasticity of supply.

When inputs are readily available and can be shifted into and out of production at a relatively low cost, the price elasticity of supply is large.

The ability to respond to price changes time was important in the case of the flu vaccine shortfall.

The radio spectrum cannot be increased at all because of the price elasticity of cell phone frequencies.

Many industries have large price elasticities of supply and can be easily expanded because they don't require any special or unique resources.

Consider the effects of a surge in flu vaccine prices again, but this time focus on the supply response.

Increasing the size of their manufacturing plants, hiring more lab technicians, and so on are some of the things that producers such as Chiron would respond to.

It takes several years to increase the capacity of a lab.

A fall in price leads to an infinite quantity demanded.

When income increases, negative quantity demands fall.

The income elasticity of demand for ity of supply for web-design services can be calculated using the midpoint method.

The income elasticity of demand increases with the use of inputs that are easily obtained.

Some students who are taking the course next term prefer to buy a used textbook rather than pay full price for a new one.

Textbook publishers and authors don't like these transactions because they reduce sales of new books.

The students who sell used books and the people who buy them benefit from the market.

Many college bookstores facilitate their trade by buying used textbooks and selling them alongside new books.

We can calculate how much benefit producers and consumers get from a market.

They allow us to calculate how the welfare of consumers and producers is affected by market prices.

We will see how these concepts can be applied to actual economic issues.

First-year college students and Consumer Surplus are often surprised by the prices of textbooks.

According to the College Board, students at public four-year schools spent an average of $1,207 on books and supplies.

The market for used textbooks is worth approximately 1.5 billion dollars in 2011.

This market is a good starting point for developing the concepts of consumer and producer surplus.

We will use the concepts of consumer and producer surplus to understand how buyers and sellers benefit from a competitive market.

One person who will buy a second-hand book even if the price is as high as $59 is Aleisha.

The demand curve has alternating horizontal and vertical segments.

Each horizontal segment corresponds to a potential buyer's willingness to pay.

The demand curve is step-shaped with only five potential consumers in this market and the next highest at $45.

It will always be clear if we are referring to the consumer surplus achieved by an individual or all buyers.

Each step of the demand curve is a single book wide and represents one consumer.

The sum of the individual consumer surpluses of the three women is equal to $29.

It is possible to say that total consumer surplus is equal to the size of the area that is below the demand curve but above the price.

This graphical representation is helpful when we consider large markets.

Consider the sales of personal computers to millions of potential buyers.

We could answer the question by calculating the individual consumer surplus of each buyer and then adding the numbers up to arrive at a total.

It is easy to see that the total consumer surplus is equal to the shaded area below the demand curve but above the price.

We might want to know the harm to consumers from a frost in Florida that drives up the prices of oranges or the introduction of fish farming that makes salmon steaks less expensive.

The gain of those who would have bought books even at a higher price is the first part.

Each of the students who would have bought books at $30 now pays $10 less, and therefore each gains $10 in consumer surplus from the fall in price to $20.

The dark blue area shows the increase in consumer surplus to those three buyers.

The second part is the gain to people who would not have bought a book if it were not for the price.

A rise in price from $20 to $30 would decrease consumer surplus by an amount equal to the sum of the shaded areas.

The quantity demanded from 200,000 to 1 million units would be increased if the price of computers fell from $4,300 to $1,500.

In the used-textbook example, we divide the gain in consumer surplus into two parts.

As a result of the price reduction, each receives an additional surplus of $2,800, which equates to $560 million.

4,000 people every year propose a new set of guide United States die while waiting for a transplant based on a concept called a kidneys transplant.

The biggest predictor of how long country is age by human body parts.

A 25-year-old who is a member of the United Network Diabetes will get an extra 8.7 years for Organ Sharing.

According to this system, an available on waiting times, transplants lead to er surplus--the individual consumer kidneys would go to a 75-year-old who about 44,000 extra years of life for re surplus generated from If a 25-year-old who has been that number was to be added to the list, they would allocate donated kidneys for six months.

The share of kidneys goes according to who gets the best 25-year-old who will likely live longer and triple the consumer surplus.

In terms of benefit from the transplant, the share going to those 60 and older of results is proposed to be for a longer period of time.

The area of the light blue triangle is more than one billion dollars.

Consumers who would still buy a computer even at a price of $4,300 would be represented by the dark blue rectangle.

Consumers who decide not to buy a computer at a higher price are represented by the light blue triangle.

Consider a group of students who are interested in selling used textbooks.

The potential sellers have different preferences in regards to the lowest price they would accept for their books.

The lowest price cost is shown in the supply curve.

Several different students would be willing to sell their goods behind the demand curve.

A student who sells a book won't have it later as part of his or her collection.

We can derive the supply curve from the cost of different producers, just as we can derive the demand curve from the willingness to pay different con.

The producer surplus gained by those who sell books can be represented graphically.

The supply curve has a width that represents one book from one seller.

Let's assume the bookstore is willing to buy all the used copies of this book that students are willing to sell at a price of $30.

The producer surplus is equal to the shaded area above the supply curve but below the price of $5 per bushel.

The area on a graph shows the price increase on every unit they produce.

It shows the effect of a rise in the price of wheat on the pro ducer surplus.

This is the total gain to producers when farmers supply when the price is $5.

The gains to those farmers who would have supplied wheat even at the original $5 price is depicted in a dark red rectangle.

Second, there is an additional light red triangle that shows the gains to those farmers who would not have supplied wheat at the original price but are drawn into the market by the higher price.

The area of the light red triangle is half a million dollars.

The triangular light red area shows the increase in producer surplus achieved by the farmers who supply the additional half a million dollars because of the higher price.

The story would run in reverse if the price fell from $7 to $5 per bushel.

Markets are an effective way to organize economic activity because they can make society as well off as possible.

Understanding why this is so can be helped by the concepts of consumer and producer surplus.

The pink area is above the supply surplus curve but below the price.

The striking thing about this picture is that both consumers and producers are better off because there is a market in this good.

Let's look at some alternatives to understand how markets promote efficiency.

Whoever has been on the longest waiting list is currently the only one who can get a kidneys.

Imagine a committee charged with improving the market equilibrium by deciding who gets and who gives up a used textbook.

The ultimate goal of the committee is to come up with another arrangement that will increase the total surplus.

The committee might try to increase the total surplus by selling used books.

Taking the book away from Ana would mean giving it to Bob.

Every student who buys a book at the market equilibrium price has a willingness to pay more than $30, and every student who doesn't buy a book has a willingness to pay less than $30.

The committee might try to increase a unit that would have occurred total surplus by altering who sells their books, taking sales away from sellers who would in market equilibrium reduces have sold their books in the market equilibrium and instead compelling those who total surplus.

At the equilibrium market price of $30, Yvonne would not sell her book.

If the committee reallocated sales, the producer surplus would be reduced by $35 and $25, respectively.

Reallocating sales increases total cost and reduces producer surplus.

The transaction reduces the total surplus by $35 because Ana is willing to pay $35.

The total surplus is reduced if any sale is prevented in the market equilibrium.

The committee might try to increase sales by forcing Yvonne, who would not have sold her book in the market equilibrium, to sell it to someone like Bob, who would not have bought a book in the market equilibrium.

The transaction reduces the total surplus by $10 because Bob is only willing to pay $25 and Yvonne's cost is $35.

There is no way to increase the gains from trade once the market is in equilibrium.

Potential buyers with the highest willingness to pay are allocated consumption of the good.

The potential sellers who have the lowest cost are allocated the most sales.

It's easy to get carried away with the idea that markets are always good and that economic policies that interfere with efficiency are bad.

It's important to realize that a society's choice to sacrifice for the sake of equity may be a valid one.

Equity and efficiency are at the center of most debates about producer surplus.

Eliminating certain taxes would make the economy more efficient, according to opponents of taxation.

There are excise taxes on gasoline, cigarettes, and foreignmade trucks, and many local governments impose excise taxes on services such as hotel room rentals.

If a customer pays $80, $40 is collected as a tax, leaving the hotel owner with only $40.

In order for hotel owners to be willing to give the same quantity post-tax as they would have before, they must receive an additional $40 per room, the amount of the tax.

5,000 rooms that would have been made available by hotel owners for $80 are not offered when they receive $60.

Like a quota on sales, this tax leads to inefficiency by creating missed opportunities for mutually beneficial transactions.

The burden of a tax depends on the elasticity of supply and demand.

It's important to note that our assumptions resulted in a 50% split between consumers and producers.

In the real world, the incidence of an excise tax usu ally varies between consumers and producers.

Consumers have little alternative to buying higher-priced gasoline because of a low price elasticity of demand.

The crude oil from which gasoline is refined can be made into other things, such as plastic, which results in a high price elasticity of supply.

Producers can refuse to accept lower prices for gasoline.

Consumers get stuck paying most of the tax because of the party with the least flexibility.

The main excise taxes collected in the United States today, such as those on cigarettes and alcoholic beverages, are allocated between consumers and producers.

The market equilibrium price of parking is $6.00 per day without the tax.

We assumed that the price elasticity of supply was very low because the lots used for parking have very few other uses.

In many American towns, house prices in desirable locations have risen as well-off outsiders have moved in and purchased homes from the less well-off original inhabitants, a phenomenon called gentrification.

Some towns have imposed taxes on house sales in order to make money from new arrivals.

The price elasticity of supply is low because most sellers have to sell their houses due to job transfers or to provide funds for their retirement.

We don't think of a tax as something that provides benefits, but governments need money to provide things people want, such as streets, schools, national defense, and health care for those unable to afford it.

The benefit comes at a cost that is larger than what consumers and producers pay.

How much money a tax raises and how much it costs will be the first thing we look at.

The consumer choice quantity of rooms is behind the demand curve.

The amount of money taxpayers pay to the government is the subject of a question.

If the government uses tax revenue to provide services taxpayers want, that's a good idea.

The government might give the tax revenue back to the taxpayers.

Hotel rooms would be rented if the two sets of people were allowed to trade without tax.

In our example, 5,000 potential hotel room rentals that would have occurred in the absence of the tax, to the mutual benefit of guests and hotel owners, do not take place because of the tax.

To measure the deadweight loss from a tax, we look at the concepts of producer and generated.

A price increase causes a loss to consumers that is represented by the sum of the areas of a triangle and a rectangle.

The government gains revenue even though consumers and producers are hurt by the tax.

The combined area of these two triangles is equal to the deadweight loss.

The deadweight loss is the amount of surplus lost to society because of the tax.

Transactions that do not take place because of the tax have generated deadweight.

Many economic applications use a triangle to measure deadweight loss.

Deadweight-loss triangles can be used to evaluate the benefits and costs of public policies besides taxation.

Administrative costs that taxpayers incur are used to evade the tax.

The inefficiency caused by a tax can be measured by its deadweight loss and administrative costs.

Unless they cause a firm to shut down, lump-sum taxes are not beneficial transactions.

People who consider home affect price or quantity, so they do improvements to make their property more valuable, not create deadweight loss.

There is no price or quantity in the market for administrative costs from the tax.

How much government revenue does the excise tax producers have to pay?

To show the effect of an excise tax on consumers, use your graph.

The demand curve can be used to study consumer responsiveness to changes in prices and can be used to predict how consumers will gain from the availability of goods and services in a market.

The tastes, preferences, and resulting choices of individual consumers are represented by the demand curve.

When analyzing consumer behavior, we look into how people pursue their needs and how they feel about purchases.

The analysis of consumer behavior only requires the assumption that people try to maximize their own satisfaction with consumption.

Consumers don't make explicit calculations of the utility generated by consumption choices.

It shows how important fried clams are to the person who likes them.

The curve in panel (a) of the figure shows that the total utility depends on the number of clams.

The utility function slopes upward over most of the range shown, but it gets flatter as the number of clams consumed increases.

Adding an additional clam would make her utility worse.

Each successive clam adds less to the total utility than the previous one.

People who are not accustomed to drinking coffee say it has a bitter taste and can't understand its appeal.

Goods that only deliver positive utility if you buy enough would be an example.

Alfred Marshall, who invented the supply and demand model, said that nobody needs to learn to like wallpaper because buying only enough to do half a room is worse ice cream.

The principle of diminishing marginal utility explains why most people eventually reach a limit, even at an all-you-can- eat buffet.

He has a weekly income of $20 and since he likes clams and potatoes, he spends all of it on them.

We know that the cost of Sammy's consumption bundle cannot surpass the amount of money he has to spend.

The are affordable because the consumer's income and quantity of clams in his consumption bundle is measured on the horizontal axis.

Sammy spends all of his income on the bundles lying on the downward-sloping line.

When Sammy spends all of his income, it shows all the consumption bundles that are available to him.

Figure 51.2 shows that any consumption bundle above the budget line is not affordable.

Next, we can consider the dilemma of what point on his budget line Sammy will choose.

Sammy's total utility can be maximized by finding the consumption bundle, which is represented by a point on the budget line.

The utility Sammy gets from consuming those clams is shown in the third column.

The panel shows how his total utility depends on the choice.

There are two sets of labels on the horizontal axis that show the quantity of clams and potatoes.

Sammy is constrained by the budget line, so we can use the same axis to represent his consumption of both goods.

The optimal consumption bundle is the one that maximizes Sammy's total utility.

Sammy's optimal consumption bundle puts him at the top of the utility curve.

The top of the curve can be found by direct observation.

In the next section, we will solve the optimal consumption choice problem with marginal analysis.

We can find Sammy's optimal consumption choice by finding the total spent on a good or service utility he receives from each consumption bundle on his budget line and then choosing the additional utility from spending one more dollar on the bundle at which total utility is maximized.

You sumer gets from consuming one more unit of a good or service; now let's see how this can be used to derive the related measure of marginal utility per dollar.

The marginal utility of the good is divided by its price in dollars.

You can see why we divide by the price by comparing the third and fourth columns of the panel.

The marginal utility per dollar spent on potatoes is shown in the last column of the panel.

This concept helps us determine a consumer's optimal consumption bundle using marginal analysis.

If Sammy's marginal utility per dollar spent on clams is higher than his marginal utility per dollar spent on potatoes, he can make himself better off by spending less on potatoes and more on clams.

If Sammy has chosen his optimal consumption bundle, his marginal utility per dollar spent on clams and potatoes must be the same.

Market utility per dollar spent on demand curve is the main reason for studying consumer behavior.

Marginal analysis adds clarity to the utility-maximizing behavior of individuals and explains more precisely how an increase in price leads to less marginal utility per dollar and therefore a decrease in the quantity demanded.

The bundle consists of underwear and marginal utility for a good.

In the following two examples, you can find all the consumptions of socks on the vertical axis and pairs of underwear tion bundles that are on the consumer's budget line.

The budget line can be drawn through the marginal utility in Table 51.3.

When Sammy increases and buckets of popcorn, the consumption bundle consists of movie tickets and potatoes.

The price elasticity of demand is determined by whether the good is a necessity or a luxury.

It can be negative if you don't have enough resources to expand production and on time.

When more time has elapsed since the price change, goods with higher inputs are normal.

The total surplus is lowered by a tax that rises less than in proportion.

The price of taxpayers' behavior affects the incidence of an excise tax.

marginal analysis is used to find optimal consump affordable consumption bundles.

A consumer who bundles his or her income with analyzing how to spend it will choose a consump dollar.

Pizza would drop from 1,050 to 950 slices if market prices for potatoes increased.

potato farmers wanted to know if method and this information would affect their total revenues, and an economist could con or not if they did.

Jack is willing to pay $90 for a used calculator if the government imposes a tax on him.

The marginal utility of playing ball excise tax on the buyers of land is equal to the games Rockville imposes.