Question

Manjit bought an iron safe for Rs 5580 and paid Rs 170 for its transportation. Then, he sold it for Rs 6440. Find the gain per cent earned by him.

Answer 1

$$\begin{gathered} \mathrm{CP}\mathrm{of}\mathrm{the}\mathrm{iron}\mathrm{safe}=\mathrm{Rs}.5580 \\ \mathrm{Transportation}=\mathrm{Rs}.170 \\ \mathrm{Total}\mathrm{CP}=\mathrm{Rs}(5580+170)=\mathrm{Rs}.5750 \\ \mathrm{SP}=\mathrm{Rs}.6440 \\ \mathrm{Since}\mathrm{SP}>\mathrm{CP},\mathrm{Manjit}\mathrm{makes}\mathrm{a}\mathrm{profit}. \\ \mathrm{Gain}=6440-5750 \\ =\mathrm{Rs}690 \\ \mathrm{Gain}\mathrm{percentage}=\left(\frac{\mathrm{gain}}{\mathrm{total}\mathrm{CP}}\times 100\right)\% \\ =\left(\frac{690}{5750}\times 100\right)\% \\ =12\% \end{gathered}$$