The price of a commodity increased by 22%. By what percentage (correct to two decimal places) should its consumption be reduced so that the total expenditure remains the same?

Correct option is D

Given:

Price of commodity increased by 22%

Solution:

Let the price of commodity be Rs100

Increased price = 100+ 22% of 100  = Rs122

Reduction on Rs 122= Rs 22

Reduction on Re 1  =$$\frac{22}{122}$$​​

Reduction on Rs 100 =$$\frac{22}{122}\times 100 =18.03\%$$​​