In the new budget, the price of kerosene oil rose by 25%. By how much per cent m

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Question

In the new budget, the price of kerosene oil rose by 25%. By how much per cent must a person reduce his consumption of kerosene oil so that his expenditure on it does not increase ?

Options:

A . 40%

B . 25%

C . 20%

D . 50%

Answer: Option C
Answer: (c)
Using Rule 8,
Required reduction in consumption
= $\text"x"/\text"100 + x" × 100$% where x = 25
= $25/{100 + 25} × 100 = 20$%

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