Question 117

Price of sugar increases by 30%. If expenditure increases by only 10%, then by how much per cent consumption should decrease ?

Solution

Let price of sugar = Rs. 10/kg and consumption = 10 kg

=> Expense on sugar = Rs. 100

New price = $$\frac{130}{100}\times10=Rs.$$ $$13$$

New expenditure = $$\frac{110}{100}\times100=Rs.$$ $$110$$

=> New consumption = $$\frac{110}{13}=8.46$$ kg

$$\therefore$$ Decrease in consumption = $$\frac{(10-8.46)}{10}\times100=15.4\approx15.38\%$$

=> Ans - (B)

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