Question

A shopkeeper bought a mobile phone for Rs.8000 and sold it@ the profit of 12 1/2%.what was his profit in Rupees?

Answer 1

Dear student
$$\begin{gathered} \mathrm{C}.\mathrm{P}\mathrm{of}\mathrm{mobile}=\mathrm{Rs}8000 \\ \mathrm{Profit}\%=12\frac{1}{2}\%=\frac{25}{2}\% \\ \mathrm{So},\mathrm{Selling}\mathrm{price}=\left[\frac{100+\mathrm{Profit}\%}{100}\times \mathrm{C}.\mathrm{P}\right] \\ =\left[\frac{100+{\displaystyle \frac{25}{2}}}{100}\times 8000\right] \\ =\left[\frac{225}{200}\times 8000\right] \\ =\mathrm{Rs}9000 \end{gathered}$$
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