Question

If the price of sugar is increased by 25% today. By what percent should it be decreased tomorrow to bring the price back to the original ?

Answer 1

Let original price of sugar = Rs. 100
$\therefore$ Price of sugar for today = Rs. 100+ Rs. 25
=Rs. 125
In order to bring down the price to original i.e., Rs. 100, its price should be decreased by = Rs. 125- Rs. 100 = Rs.25
$\therefore$ On Rs. 125, the price should be decreased by
=Rs.25
On Re.1, the price should be decreased by
= Rs. $\frac{25}{125}$
On Rs. 100, the price should be decreased by
= Rs. $\frac{25}{125}\times 100=Rs.\frac{1}{5}\times 100$
= Rs. 20
$\therefore$ Price should be decreased by 20%