The world production of coconuts is 80 coconuts.
Specialisation is when a country exclusively produces a good or service for which it has a comparative advantage in its production. A country has a comparative advantage in the production of a good or service for which it has a lower opportunity cost in its production.
The world production of coconuts is the sum of the quantity of coconut produced by the United States and the quantity of coconuts produced by Jamaica. The world production of coconuts = quantity of coconuts products by United States + quantity of coconuts products by Jamaica.
The world production of coconuts = 80 + 0 = 80
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