Question

A man sells a bat for $Rs.100$ gaining $Rs.20.$ His gain per cent is
(a) $20\%$
(b) $22\%$
(c) $18\%$
(d) $25\%$

Answer 1

The correct option is (d) $25\%$
SP$=Rs.100$

Gain$=Rs.20$

CP$=$Sp$-$Gain$=100-20=Rs.80$

Gain percentage $=\frac{\text{gain}}{\text{CP}}\times 100\%=\frac{20}{80}\times 100\%=25\%$