2
Q:
A) 11% | B) 9.09% |
C) 11.09% | D) 8.25% |
Answer: B) 9.09%
Explanation:
Explanation:
Let the price of kerosene be x and household
consumption be y.
Expenditure = xy
New cost of kerosene = 1.1x, let new household
consumption be z.
In order to not to increase expenditure,
xy = 1.1x * a
⇒ a= 10y/ 11
⇒ consumption should decrease by = 1/11 X 100 = 9.09%