Question

2. The cost of a commodity was '50 in the last year. This year, the cost of
the commodity was increased by '60. What is the percentage change in its​

Answer 1

Answer:

Correct option is

D

37.5%

Let the price of the commodity be Rs. x and its consumption be y.

Then Expenditure = Rs. xy

Increased price = Rs.

100

160

x=Rs.1.6x

Expenditure remaining the same = Rs. xy

∴ Reduced consumption =

1.6x

xy

=

16

10y

=

8

5

y % reduction in consumption

=

y

y−5/8y

×100

=

8

3

×100%

=37.5%