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?
A) 20%
B) 25%
C) 50%
D) 40%
Correct Answer:
A
Solution :
Reduction in consumption \[=\frac{25\times 100}{125}%=20%\]