The price of a commodity rises from Rs. 9 to Rs. 12.60. If the expenditure does not increase, the percentage of reduction in its consumption is :

Question

Question

This question was previously asked in

MPPKVVCL Jabalpur JE Electrical 16 August 2018 Official Paper

Answer 1

Given:

The price of a commodity rises from Rs. 9 to Rs. 12.60.

Calculation:

Let's before rising consumers used to get 126 gm for Rs. 9

So, For Rs. 1 they used to get 14 gm

Now,

For 126 gm they need to pay Rs. 12.6

So, for Rs. 1 they used to get 10 gm

If a customer does not want to change his expenditure then he will get 10 × 9 = 90 gm in Rs. 9

So, reduction in consumption = 126 - 90

⇒ 36

% of change =

⇒

∴ The percentage of reduction in its consumption is .