Question 56

If the price of Sugar increases by 20%, and Salman intends to spend only an additional 5% on Sugar, then find out the percentage decrease in his sugar consumption.

Solution

Let the initial price and expenditure of sugar be 100p, 100e respectively.

Consumption = $$\ \frac{\ Expenditure\ }{\Pr ice}$$

=$$\ \frac{\ e\ }{p}$$

The increased price of sugar = 120p

Increased expenditure on sugar = 105e

Changed consumption = $$\ \frac{105\ e\ }{120p}$$

=0.875 $$\ \frac{\ e\ }{p}$$

Percentage decrease in consumption = $$\ \frac{(0.875-1)}{1}$$*100

=12.5

B is the correct answer.

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