A-Level经济例题解析及练习Analysis of trade

今日知识点：Analysis of trade

例题

Without trade, PD = $3000, Q = 400; in world markets, PW = $1500

Under free trade, how many TVs will the country import or export?

Identify consumer surplus, producer surplus, and total surplus without trade, and with trade. 

解析

Under free trade,

• domestic consumers demand 600

• domestic producers supply 200