Question

Mark (✓) against the correct answer
On selling a chair for Rs 720, a man gains 20%. The cost price of the chair is

(a) Rs 864
(b) Rs 576
(c) Rs 650
(d) Rs 600

Answer 1

(d)Rs. 600

SP of the chair = Rs 720
Gain% = 20

$$\begin{gathered} C.P.=\{\frac{100}{(100+\mathrm{Profit}percentage)}\times S.P.\} \\ =\{\frac{100}{120}\times 720\} \\ =\frac{7200}{12} \\ =\mathrm{Rs}.600 \end{gathered}$$