Question

By selling a chair for Rs 1375 a man gains 10%. Find its cost price.

Answer 1

SP of the chair = Rs 1375
Gain% = 10

$\mathrm{CP}\mathrm{of}\mathrm{the}\mathrm{c}\mathrm{hair}=\{\frac{100}{(100+\mathrm{Gain}\%)}\times \mathrm{SP}\}$

$$\begin{gathered} =\{\frac{100}{(100+10)}\times 1375\} \\ =\frac{137500}{110} \\ =\mathrm{Rs}.1250 \end{gathered}$$