01(42)
The production cost of 1unit of food in the country X is 3 units of clothing.
When country X trades with country Y, it can obtain 1 unit of clothing import by exporting 0.2 units of food.
What is country X's total gain from trade if it exports 10 units of food to country Y?
Ans: A.20 units of clothing.
Why the ANS is 20 but not 50?
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