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A world without money would require what economists call a double coincidence of:
ATheir prices
BTheir taxes
CThe harvests
DTheir wants
Answer & Solution
Correct answer: D. Their wants
1. Barter has a famous problem.
2. To understand the usefulness of money we consider a world without it.
3. That world is described under barter and the double coincidence of wants.
4. Each trader must want exactly what the other is offering.
_Source: OpenStax Principles of Macroeconomics for AP Courses 2e (CC BY 4.0), Ch 13 'Money and Banking'_
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