Question

the price of sugar goes up by 30 percent .by what percent should be a housewife reduce her consumption so that the expenditure does not increase​

Answer 1

Answer:

100: 30:: 130: x

100x=130*30

100x=3600=3600/100

x=36

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%.