Question

the price of an article is decreased by 20% by what percentage must its consumption be increased so that the expenditure on it increases by 10%​

Answer 1

please answer me of follow-up comments via email

Answer 2

Answer:

37.5%

Step-by-step explanation:

Let us consider before the price decrease

Price=100Rs

Consumption=2Kg

Expenditure=2*100=200Rs

After the price decrease by 20% and increase in expenditure by 10%

Price=100(100-20)/100=80Rs

Consumption=x

Expenditure=(200*100)/100=200Rs

Consumption=220/80=2.75

Increase in percentage of consumption=(2.75-2)/2*100 = 3.75%

So there must be a 37.5% increase in consumption if we want the expenditure to go up by 10% and the price to go down by 20%

So I think I have answered your question