Answer:
1
Explanation:
Elasticity of demand measures the responsiveness of quantity demanded to changes in price.
Elasticity of demand = percentage change in quantity demanded / percentage change in price
Percentage change in quantity demanded = (30/20) - 1 = 0.5 = 50%
Percentage change in price = (1500 / 3000) - 1 = 0.5 = 50%
50% / 50% = 1
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