Question

Example 19. If the price of a commodity is reduced by 40%, by how
much percent should consumption increase so that expenditure may remain
unaltered ?
מתווה​

Answer 1

Step-by-step explanation:

Let a man buy y commodities for x Rs.

Total expenditure= Rs. xy

Increased price of commodity=140x/100=7x/5

= 1.4x Rs.

So, in order to keep expenditure constant, man has to buy

xy/1.4x=5y/7 commodities.

Decrease in purchase= y-5y/7= 2y/7 commodities

% decrease= 2y*100/7y

= 200/7 % = 28.57 %(approx.)

hope it helps :)

have a wonderful journey ahead

______________

XxMrQatilxX here ✅