Question

3. If the price of wheat is increased by 30%. By
what percentage should a family decrease​

Answer 1

Explanation:

In such questions always use this formula..

If the price of a commodity increases by R%, then the reduction in consumption so as not to increase the expenditure is:

[(R×100)/R+100] %

(30×100)/30+100

=3000/130

~23%

Answer 2

Answer:

23.07%

Explanation:

Price x consumption = Expenditure

30% means 3/10

which means :-

price : 10 --------> 13

consumption. 13 --------> 10

Which means there is 3 units decrease in consumption .

So, (3/13) x 100 = 23.07 %