If price of oil is increased by 331/3%, by how much a housewife must reduce consumption of oil so that her expenditure on oil remains the same?

If price of oil is increased by 33¹/₃%, by how much a housewife must reduce consumption of oil so that her expenditure on oil remains the same?

A 331/3%

B 25%

C 40%

D 59%

Correct Answer: Option B

If price of x amount oil was 100

Then, now it is 100+331/3 = 1331/3

Housewife used to spend 100 for x amount of oil.

1331/3 is the price of x amount

100 is the price of x*100/1331/3

= x*100*3/400

= 3x/4

Must reduce (x- 3x/4)

= (4x-3x)/4

= x/4

&nbs