Question

The price of sugar goes up by 20%. By how much percent must a house wife
reduce her consumption so that the expenditure does not increase?
​

Answer 1

suppose, price of sugar be 100 rupees per kg

So, for 1 rupees she get =10 grams

Now, price of sugar is 120

So, for 1 rupees she get

=

$\frac{100}{12} g$

So, for 100 she get

$= 833.3g$

So, decrease in consumption

$= \frac{1000 - 833.3}{1000} \times 100$

$= 166.7 \times 10$

$= 16.67\%$

hope it's helpful to you....

Answer 2

Given, percentage of increase in sugar= 20%
Since there are no other increase in other prices, the house wife shall reduce her consumption by 20%
Therefore, Ans: 20%