In 2012, the price of arhar/toor daal increased by 50%, by what % should a housewife reduce the cons

M4maths Previous Puzzles

08 May 2019 Percentage

In 2012, the price of arhar/toor daal increased by 50%, by what % should a housewife reduce the consumption of arhar/toor daal so that expenditure on arhar/toor daal can be same as before ?

OPtion

1) 20%
2) 15%
3) 25%
4) 40%
5) 50%
6) 33.33%
7) 45%
8) 60%
9) 66.66%
10) None of these

Solution

As price increase and consumption are inversely proportional,
if one increases by 1/x then other should reduce by 1/(x+1)
hence 50% is 1/2, consumption should reduce by 1/(2+1) = 1/3 = 33.33%

Correct Option: 6 Best Solution (3)