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sashaice [31]
3 years ago
14

Độ co giãn của cầu theo giá =-3 có nghĩa là gì

Mathematics
1 answer:
mario62 [17]3 years ago
6 0

Answer:

Step-by-step explanation:

What does price elasticity of demand = -3 mean ?

Price elasticity of demand = change in % of demand / change in % of price

So

change in % of demand / change in % of price = -3

or

change in % of demand = -3 * change in % of price

means that

when price is <em>increased</em> by 10 percent, the demand is <em>decreased</em> by 30 percent.

This happens when there is a possibility of substitution, such as coffee and tea.  When coffee prices are increased by 10%, the demand of coffee is decreased by 30%.

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