1.

Price elasticity of demand of a good is -0.75. Calculate the percentage fall in its price that will results in 15 per cent rise in its demand.

Answer»

SOLUTION :Elasticity of demand
`= ("PERCENTAGE change in quantity DEMANDED")/("Percentage change in price")`
or `= 0.75 = (15)/(x)`...[Let x be the percentage change in price]
or `-0.75x = 15 x = 15 xx (100)/(-0.75) x = - 20`
Price will fall by 20%


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