Question

The salary of an officer is increased by 25$\%$. By what per cent should the new salary be decreased to restore the original salary ?

Answer 1

Let present salary = Rs. 100 Increase = 25$\%$ $\therefore$ Increased salary = Rs. 100 + 25 = Rs. 125 To receive the original salary, amount to be decreased = Rs. 125 - 100 = Rs. 25 $\therefore$ $\%$ decrease = $\frac{25\times 100}{125}$ = 20$\%$