Question

the cost of onion has increased by 20% ramen babu has decided not to alter the monthly expenses towards the purchase of onion , calculate in percentage how much he will reduce the use of onion per month plz solve it​

Answer 1

Answer:

20

___×30=6

100

he will reduce 6RS for per month

Answer 2

Given: the cost of onion has increased by 20%.

To find: percentage reduction in the amount of onions.

Solution:

Assume that Ramen purchases 100 onion for 100 rupees.

Note that from the question, the price of onion is increased by 20%.

Therefore, increased price of onion will be,

$\[\frac{{120}}{{100}} \times 100 = 120\]$Rupees

Know that, Ramen did not increase his expenses which means he bought the onions for the amount of money he used to buy earlier, i.e., Rs. 100.

Find the reduction in the amount of onion purchased.

Understand that,

Rs. 120 can buy 100 onions.

$\[ \Rightarrow \]$Re. 1 can buy $\[\frac{{100}}{{120}}\]$onions.

$\[ \Rightarrow \]$Rs. 100 can buy $\[\frac{{100}}{{120}} \times 100 = 83.33 \approx 83\]$onions.

Find the percentage reduction in the amount of onions being bought.

Percentage reduction$\[ = \frac{{\left( {100 - 83} \right)}}{{100}} \times 100\]$

                                   $\[\begin{array}{l} = \frac{{17}}{{100}} \times 100\\ = 17\% \end{array}\]$

Hence, there is a 17% reduction in the amount of onions bought per month.