Question

$\text{If the selling price of an air conditioner is equal to}1\frac{1}{3}\text{of its cost price find the gain per cent}$

Answer 1

$\text{Let C.P. =Rs.100}\text{then S.P.}=1\frac{1}{3}oRs.100=\frac{4}{3}\times 100=Rs.\frac{400}{3}Gain=S.P.-C.P,=Rs.\frac{400}{3}-100=Rs.\frac{100}{3}Gain\%=\frac{Gain\times 100}{C.P}=\frac{100\times 100}{3\times 100}=\frac{100}{3}=33\frac{1}{3}\%Ans.$