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A price change causes the quantity demanded of a good to decrease by 25 percent. As...

A price change causes the quantity demanded of a good to decrease by 25 percent. As a result, total revenue from sales of the good decreases by 10 percent. Is the demand curve elastic or inelastic? Why?

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Answer #1

An increase in price of a good decreases quantity demanded (according to the law of demand, there is an inverse relationship between price and Quantity demanded) by 25% and TR decreases by 10%.

In case of elastic demand, a sight increase in price, decreases Quantity demanded by larger amount, causing the TR to fall. That is, in case of elastic demand, change in price and change in total revenue moves in the opposite direction.

So, here the good must have an elastic demand curve.

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