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If 20% increase in the price of a good leads to a 60% decrease in the quantity demanded, then what is the price elasticity of demand?

If 20% increase in the price of a good leads to a 60% decrease in the quantity demanded, then what is the price elasticity of demand?
A.1/3.
B.1/6.
C.30.
D.3.
正确答案：3.

标签：微观经济学中国大学MOOC微观经济学

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