The price elasticity of demand measures the percentage change in sales for a given percentage change in
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The price elasticity of demand measures the percentage change in sales for a given percentage change in the goods price, all other factors held constant:
Ep = {change inQ/Q}/ {change in P/P}
a. Demand is unitary elastic if Ep = -1. In turn, demand is elastic if EP < -1. Finally, demand is inelastic if -1 < Ep < 0
b. Revenue is maximized at the price and quantity for which marginal revenue is zero or equivalently the price elasticity of demand is unity.
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Both the demand and supply curve show the relationship between price and the number of units demanded or supplied Price elasticity is the ratio betwee... View the full answer
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