Question

$\text{A dealer sold a camera for Rs. 1080 gaining}\frac{1}{8}\text{of its cost price . Find (i)~the cost price of the camera, and (ii) the gaon per cet earned by the dealer.}$

Answer 1

$\text{S.P. of camera = Rs.1080}\text{C.P.of camera+gain=S.P. of camera}\Rightarrow \text{C.P. of vamera}+\frac{1}{8}\text{of C.P.=S.P. of camera}\frac{9}{8}\times \text{C.P. of camera = S.P. of camera =Rs.1080}\left(i\right)\therefore \text{C.P.of camera}=Rs.\frac{1080\times 8}{9}=Rs.960\text{and gain=S.P-C.P}=Rs.1080-Rs.960=Rs.120\left(ii\right)Gain\%=\frac{Gain\times 100}{C.P.}=\frac{120\times 100}{960}=\frac{25}{2}\%=12.5\%Ans.$