ECON2209 Lecture Notes - Lecture 2: Market Power, Diminishing Returns, Absolute Advantage

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8 Jun 2018

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January 18th

● Opportunity Cost

○ Martha

○ Paul

Martha

Paul

Writing poems: .5

.67

Writing Songs 2

1.5

○ Martha has a comparative advantage writing poems (Lower opportunity cost than

Paul)

○ Paul has a comparative advantage in writing songs

○ Theory of comparative advantage says, the person who has a comparative

advantage in a good… they should concentrate on that good so society can gain

○ Babe Ruth has an absolute advantage in both hitting and pitching but had a

comparative advantage in hitting… so focused on that.

○ First assignment is due maybe next thursday

○ How can we trade?

○ Specialization and Trade, specialize in the production in good in which you have

a CA… then trade

● Real Exchange rate

■ Rate at which goods are traded

■ Within opportunity cost

■ Ex: Poem vs. Song, we have 2 for 1.5… so the terms of trade could be 1

song for anything between 1.5 poems to 2 poems

■ Can use this range to determine terms of trade or the real exchange rate

■ X10… 15 poems < 10 songs < 20 poems

■ So… 10 songs for say 17 poems makes sense

● Micro Tools (Chapter 2)

○ 1. Supply and Demand Analysis

■ We assume markets are stable, and competitive

● Many buyers and sellers

● Firms produce an identical product (homogeneous)

● Perfect information (everyone knows what everyone is charging)

● No barriers to entry

● Firms have no market power

○ Price takers, cannot set prices

● Firms have no effective market power

○ Difference? Has to do with maintaining economic profits in

the long run

○ In the long run have zero economic profit!

○ 2. Demand

■ Buyers side of the market

■ A. Determinants of individual demand?

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Document Summary

Martha has a comparative advantage writing poems (lower opportunity cost than. Paul has a comparative advantage in writing songs. Theory of comparative advantage says, the person who has a comparative advantage in a good they should concentrate on that good so society can gain. Babe ruth has an absolute advantage in both hitting and pitching but had a comparative advantage in hitting so focused on that. First assignment is due maybe next thursday. Specialization and trade, specialize in the production in good in which you have a ca then trade. Ex: poem vs. song, we have 2 for 1. 5 so the terms of trade could be 1 song for anything between 1. 5 poems to 2 poems. Can use this range to determine terms of trade or the real exchange rate. X10 15 poems < 10 songs < 20 poems. So 10 songs for say 17 poems makes sense. We assume markets are stable, and competitive.

Related Questions

3. Gains from trade

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

Country	Rye	Jeans
Country	(Bushels per hour of labor)	(Pairs per hour of labor)
Euphoria	8	32
Contente	12	24

Initially, suppose Contente uses 1 million hours of labor per week to produce rye and 3 million hours per week to produce jeans, while Euphoria uses 3 million hours of labor per week to produce rye and 1 million hours per week to produce jeans. Consequently, Euphoria produces 24 million bushels of rye and 32 million pairs of jeans, and Contente produces 12 million bushels of rye and 72 million pairs of jeans. 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 rye and jeans it produces.

Euphoria's opportunity cost of producing 1 bushel of rye isï¼ ï¼ of jeans, and Contente's opportunity cost of producing 1 bushel of rye isï¼ ï¼ of jeans. Therefore, ï¼ ï¼has a comparative advantage in the production of rye, andï¼ ï¼ has a comparative advantage in the production of jeans.

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 rye will produce ï¼ ï¼million bushels per week, and the country that produces jeans will produce ï¼ ï¼ million pairs per week.

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

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

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 rye was 36 million bushels per week, and the total production of jeans was 104 million pairs per week. Because of specialization, the total production of rye has increased byï¼ ï¼million bushels per week, and the total production of jeans has increased by ï¼ ï¼million pairs per week.

Because the two countries produce more rye and more jeans 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").

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

3. Gains from trade

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

Country	Jeans	Rye
Country	(Pairs per hour of labor)	(Bushels per hour of labor)
Felicidad	8	32
Arcadia	12	24

Initially, suppose Arcadia uses 1 million hours of labor per month to produce jeans and 3 million hours per month to produce rye, while Felicidad uses 3 million hours of labor per month to produce jeans and 1 million hours per month to produce rye. Consequently, Felicidad produces 24 million pairs of jeans and 32 million bushels of rye, and Arcadia produces 12 million pairs of jeans and 72 million bushels of rye. 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 rye it produces.

Felicidad's opportunity cost of producing 1 pair of jeans is _____ of rye, and Arcadia's opportunity cost of producing 1 pair of jeans is _____ of rye. Therefore, _____ has a comparative advantage in the production of jeans, and ____ has a comparative advantage in the production of rye.

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 ______ millions pairs per month, and the country that produces rye will produce ______ millions 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 rye.

When the two countries did not specialize, the total production of jeans was 36 million pairs per month, and the total production of rye 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 rye has increased by _____ million bushels per month.

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

	Felicidad		Arcadia
	Jeans	Rye	Jeans	Rye
	(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	?	?	?	?

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.

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.

	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

ECON2209 Lecture Notes - Lecture 2: Market Power, Diminishing Returns, Absolute Advantage

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