CountryA --- 2 Wheat(Units) or 10 Bananas(Units)
CountryB --- 3 Wheat(Units) or 9 Bananas(Units)
a) Explain which good Country A will export.
b) Suppose the two countries trade with each other and the terms of trade are 1 unit of wheat for 4 units of bananas. Calculate Country A's gains from trade (in terms of bananas) for 1 unit of goods exported.