Question

On selling a calculator for Rs.$1325$, a man gains $6\%$. For how much should he sell it to gain $12\%$?

Answer 1

Given selling price of calculator $=1325$ Rs

Gain % $=6$ %

Now gain % = $\frac{SP-CP}{CP}\times 100$

$1+\frac{6}{100}=\frac{1325}{CP}$

$CP=\frac{1325}{1.06}=1250Rs$

Now if gain % $=12$ %

then gain % $=\frac{SP-CP}{CP}\times 100$

$\frac{12}{100}=\frac{SP}{CP}-1$

$1+0.12=\frac{SP}{CP}$

$SP=1.12\times 1250=1400$ Rs

Hence to gain $12$% profit selling price should be $1400$ Rs.