Question

the price of sugar goes up 30%. by what percent should a house wife reduce her consumption so that the expenditure does not increase?​

Answer 1

Answer:23.1%

Step-by-step explanation:

Suppose the price of sugar is ₹100.

130% of 100=₹130

New consumption %=

100*100/130

1000/13

76.9% approximately

Therefore,the consumption should be decreased by 100-76.9=23.1%

Answer 2

Let price of 100kg sugar be=100rs

Price goes up by 30% , therefore new price= 130rs

In 130rs quantity of sugar can be purchased =100kg

In 100rs quantity of sugar can be purchased =100×100/130

=1000/13kg

Difference in consumption

=100/1-1000/13

=1300-1000/13

=300/13kg

% of reduction= 300/13/100×100

= 23×1/13%.