ECO101H1 Lecture Notes - Lecture 4: Absolute Advantage, Comparative Advantage, Opportunity Cost

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Lesson 4- comparative advantage and the gains from trade. Jane has absolute advantage in production of cloth and corn. Opportunity cost of john and jane (example 2) John"s ppf is unchanged, so his opp cost is unchanged. Jane is twice as productive in the production of both goods as example 1, so her opp cost are also unchanged (students should confirm) John has a comparative advantage in the production of cloth, while jane has a comparative. Before trade, john and jane divide their time equally between production of cloth and corn. After trade, john specializes completely in the production of cloth, while jane now allocates 75% of her time to the production of corn. Jane allocate 75% of her time to corn and 25% of her time to cloth. Under this assumption, we can readily demonstrated that total output of cloth and corn increases, with unchanged resources for john and jane.

Related Questions

Consider two neighboring island countries called Felicidad and Contente. They each have 4 million labor hours available per month that they can use to produce jeans, corn, or a combination of both. The following table shows the amount of jeans or corn that can be produced using 1 hour of labor.

Country	Jeans	Corn
Country	(Pairs per hour of labor)	(Bushels per hour of labor)
Felicidad	8	32
Contente	12	24

Initially, suppose Contente uses 1 million hours of labor per month to produce jeans and 3 million hours per month to produce corn, while Felicidad uses 3 million hours of labor per month to produce jeans and 1 million hours per month to produce corn. Consequently, Felicidad produces 24 million pairs of jeans and 32 million bushels of corn, and Contente produces 12 million pairs of jeans and 72 million bushels of corn. Assume there are no other countries willing to trade goods, so, in the absence of trade between these two countries, each country consumes the amount of jeans and corn it produces.

Felicidad's opportunity cost of producing 1 pair of jeans is______ bushels of corn, and Contente's opportunity cost of producing 1 pair of jeans is______â bushels of corn. Therefore,______ has a comparative advantage in the production of jeans, and______ has a comparative advantage in the production of corn.

Suppose that each country completely specializes in the production of the good in which it has a comparative advantage, producing only that good. In this case, the country that produces jeans will produce______million pairs per month, and the country that produces corn will produce______million bushels per month.

In the following table, enter each country's production decision on the third row of the table (marked "Production").

Suppose the country that produces jeans trades 26 million pairs of jeans to the other country in exchange for 78 million bushels of corn.

In the following table, select the amount of each good that each country exports and imports in the boxes across the row marked "Trade Action," and enter each country's final consumption of each good on the line marked "Consumption."

When the two countries did not specialize, the total production of jeans was 36 million pairs per month, and the total production of corn was 104 million bushels per month. Because of specialization, the total production of jeans has increased by______million pairs per month, and the total production of corn has increased by______million bushels per month.

Because the two countries produce more jeans and more corn under specialization, each country is able to gain from trade.

Calculate the gains from tradeâthat is, the amount by which each country has increased its consumption of each good relative to the first row of the table. In the following table, enter this difference in the boxes across the last row (marked "Increase in Consumption").

	Felicidad		Contente
	Jeans	Corn	Jeans	Corn
	(Millions of pairs)	(Millions of bushels)	(Millions of pairs)	(Millions of bushels)
Without Trade
Production	24	32	12	72
Consumption	24	32	12	72
With Trade
Production
Trade action
Consumption
Gains from Trade
Increase in Consumption

Suppose that the U.S. and Brazil produce only two goods --- computer and coffee. The table below gives its production possibilities.

Computer Opp Cost Coffee Opp Cost

U.S.: 12 4

Brazil: 5 10

1. Draw the graphs of the production frontier for each country. Make sure that you level the diagram properly and indicate the name of the country under the graph.

2. What are the opportunity costs of producing each good in the two countries? List them in the table.

3. On which good each country has a comparative advantage?

4. Which country exports computers? Coffee?

5. What is the range of TOT in which only Brazil gains from trade?

6. What is the range of TOT in which only the U.S. gains from trade?

7. What is the range of TOT in which both countries gain from trade?

chocolatetiger413

PART A

1. In which of the following situations is the Coase theorem likely to apply? Explain.

a. The neighbor who lives below you in the apartment building loves to play old John Denver records at loud volume early in the morning. In fact, his favorite song seems to be âThank God Iâm a Country Boy.â You hate old John Denver songs and this one in particular.

b. You have just moved to Beijing and quickly discover that you are allergic to smog. It causes you great pain in breathing and limits your ability to work. Furthermore, you have medical expenses related to treatment for its health effects on you.

c. Medical research in the 1990s has revealed a specific cause of birth defects related to a certain drug prescribed for pregnant women in the 1960s (thalidomide).

d. The water in the huge underground Ogalalla aquifer in the Great Plains region of the United States is being nitrate contaminated due to agricultural fertilizer use throughout the region. As a homeowner in this region, you find that your water must be treated in order to be safe for drinking.

2. One of the most striking aspects of cities in the former Soviet Union is the poor condition of public places. Streets, parks, libraries, museums, concert halls, and public gathering places of every description are all in very poor condition, revealing years of neglect and lack of maintenance.

Explain this phenomenon in light of the definition of property rights and the transition from socialism to a market economy.

3. Suppose that the marginal benefit associated with corn production is MB = 2.5. The marginal private cost of production is MPC = 2 + 0.1Q, where Q measures bushels of corn produced in thousands. The marginal damages caused by pollution in corn production are given by MD = 0.05Q.

a. Compute the privately optimal output and the socially optimal output.

b. Compute new solutions for an increase in MB to MB = 3. Explain what has happened and why. c. Demonstrate the effects of an increase in MD to MD = 0.075 compared to the solutions in part a.

4. Policy analysts in the Department of Natural Resources have estimated that the marginal benefits from water pollution abatement are given by the function MB Â¼ 0.90 Ã 0.03A, where A is a measure of the abatement intensity. Industry experts have estimated that the marginal cost of abatement activity is MC = 0.30 + 0.09A.

a. Determine the optimal level of abatement activity.

b. Explain what happens when new technology reduces the marginal cost of abatement to MC = 0.25 + 0.06A. 5. Consider the pollution reduction mechanism known as emissions trading. a. What is the economic rationale for permitting emissions trading?

b. If the objective is to minimize the cost of emissions reductions, explain what economic principle should be followed in allocating emissions reductions between two countries.

c. Suppose the marginal cost curves for emissions reductions in countries A and B are MCA = 10 + 0.04qA and MCB = 5 + 0.02qB. What is the most efficient allocation of an emission reduction of q0 between the two countries? (Assume that the emissions reductions of the two countries must add up to the total emissions reduction: q0 = qA = qB.)

PART B

1. Which of the following do you consider pure public goods? Private goods? Why?

a. Wilderness areas

b. Satellite television

c. Medical school education

d. Public television programs

e. Automated teller machine (ATM)

2. Indicate whether each of the following statements is true, false, or uncertain, and justify your answer.

a. Efficient provision of a public good occurs at the level at which each member of society places the same value on the last unit.

b. If a good is nonrival and excludable, it will never be produced by the private sector.

c. A road is nonrival because one personâs use of it does not reduce another personâs use of it.

d. Larger communities tend to consume greater quantities of a nonrival good than smaller communities.

3. Tarzan and Jane live alone in the jungle and have trained Cheetah both to patrol the perimeter of their clearing and to harvest tropical fruits. Cheetah can collect 3 pounds of fruit an hour and currently spends 6 hours patrolling, 8 hours picking, and 10 hours sleeping.

a. What are the public and private goods in this example?

b. If Tarzan and Jane are each currently willing to give up one hour of patrol for 2 pounds of fruit, is the current allocation of Cheetahâs time Pareto efficient? Should he patrol more or less?

4. The aircraft company Airbus receives much of its funding from European governments. Airbus recently decided to build a new 550-seat mega-jetliner, with duty-free shopping courts and restaurants on board. The project has experienced production delays as well as cost overruns, and it now appears that there will be very few buyers. An industry expert says the idea from the start was ânonsenseâ

Is public sector production of aircrafts ever justified?

Explain why it could lead to the apparently ill-advised decision to build the mega-jetliner.

5. Suppose that there are only two fishermen, Zach and Jacob, who fish along a certain coast. They would each benefit if lighthouses were built along the coast where they fish. The marginal cost of building each additional lighthouse is $100. The marginal benefit to Zach of each additional lighthouse is 90 â Q, and the marginal benefit to Jacob is 40 â Q, where Q equals the number of lighthouses.

a. Explain why we might not expect to find the efficient number of lighthouses along this coast.

b. What is the efficient number of lighthouses? What would be the net benefits to Zach and Jacob if the efficient number were provided?

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ECO101H1 Lecture Notes - Lecture 4: Absolute Advantage, Comparative Advantage, Opportunity Cost

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