Question

Suppose retailers discover that the elasticity of demand for heart medicine is -0.2. Suppose a shortage of a key ingredient increases the price of heart medicine by 15%. By what percentage should retailers expect sales of heart medicine to change? ype your answer as a one or two digit number. Use a sign if the answer is negative. Do not use a .+ sign or a .96 sign.)
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Answer #1

This is a simple problem of price elasticity.

According to definition of price elasticity:

Price elasticity = Percentage change in qty / Percentage change in price

In this case we have :

-0.2 = % change in qty / 15

So % change in qty = - 3

Implication: 15 % rise in price level leads to 3 % fall in qty (demand).

They should expect 3 % fall in sales.

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