克鲁格曼国际经济学答案(共4页).doc

《克鲁格曼国际经济学答案(共4页).doc》由会员分享，可在线阅读，更多相关《克鲁格曼国际经济学答案(共4页).doc（4页珍藏版）》请在淘文阁 - 分享文档赚钱的网站上搜索。

1、精选优质文档-倾情为你奉上Chapter 21Home has 1200 units of labor available. It can produce two goods, apples and bananas. The unit labor requirement in apple production is 3, while in banana production it is 2. aGraph out the production possibilities frontier: bWhat is the opportunity cost of apples in terms of

2、bananas?cIn the absence of trade, what would the price of apples in terms of bananas be? In the absence of trade, since labor is the only factor of production and supply decisions are determined by the attempts of individuals to maximize their earnings in a competitive economy, only when will both g

3、oods be produced. So 2Home is as described in problem 1. There is now also another country, Foreign, with a labor force of 800. Foreigns unit labor requirement in apple production is 5, while in banana production it is 1. aGraph Foreigns production possibilities frontier: bConstruct the world relati

4、ve supply curve.3Now suppose world relative demand takes the following form: Demand for apples/demand for bananas = price of bananas/price of apples. aGraph the relative demand curve along with the relative supply curve: When the market achieves its equilibrium, we have RD is a hyperbola bWhat is th

5、e equilibrium relative price of apples? The equilibrium relative price of apples is determined by the intersection of the RD and RS curves. RD: RS: cDescribe the pattern of trade. In this two-country world, Home will specialize in the apple production, export apples and import bananas. Foreign will

6、specialize in the banana production, export bananas and import apples. dShow that both Home and Foreign gain from trade. International trade allows Home and Foreign to consume anywhere within the colored lines, which lie outside the countries production possibility frontiers. And the indirect method

7、, specializing in producing only one production then trade with other country, is a more efficient method than direct production. In the absence of trade, Home could gain three bananas by foregoing two apples, and Foreign could gain by one foregoing five bananas. Trade allows each country to trade t

8、wo bananas for one apple. Home could then gain four bananas by foregoing two apples while Foreign could gain one apple by foregoing only two bananas. So both Home and Foreign gain from trade.4Suppose that instead of 1200 workers, Home had 2400. Find the equilibrium relative price. What can you say a

9、bout the efficiency of world production and the division of the gains from trade between Home and Foreign in this case?RD: RS: In this case, Foreign will specialize in the banana production, export bananas and import apples. But Home will produce bananas and apples at the same time. And the opportun

10、ity cost of bananas in terms of apples for Home remains the same. So Home neither gains nor loses but Foreign gains from trade.5Suppose that Home has 2400 workers, but they are only half as production in both industries as we have been assuming, Construct the world relative supply curve and determin

11、e the equilibrium relative price. How do the gains from trade compare with those in the case described in problem 4?In this case, the labor is doubled while the productivity of labor is halved, so the effective laborremains the same. So the answer is similar to that in 3. And both Home and Foreign can gain from trade. But Foreign gains lesser compare with that in the case 4. 专心-专注-专业