If the price of an eraser is reduced by 25%, a person can buy three more erasers for ₹2. How many erasers can be bought for ₹2 as the original price?

9

25% = \(\frac{1}{4}\)

                      Original      :        New 

Price                    4          :            3

Consumption         3         :             4

ATQ , 

1R =3 eraser

Erasers bought for ₹2 for the original price  = 3 × 3 = 9 eraser