Question #95590

Suppose the price of Doritos fall from R12.50 to R8.50. As a result, the quantity of peanuts increases from 50 to 200. Calculate the cross-price elasticity using the arc formulae and interpret your answer.

Expert's answer

Cross-price elasticity is calculated as E=((200-50)/50)/((8.5-12.5)/12.5)=3/(-0.32)=-9.375

Itr means that the quantity of peanuts increses by 9.375% when the price of Doritos decreases by 1%.

The goods are complements, because the coefficient is negative.

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