The resulting change in the quantity demanded is a five percent decrease.
Elasticity of demand measures the percentage change in quantity demanded in relation to the percentage change in price.
Elasticity of demand = percentage change in quantity demanded / Â percentage change in price.
percentage change in price = ($60 / $50) - 1 = 0.2 = 20%
percentage change in quantity demanded = -0.25 x 20% = -5%
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