# If a man sold a clock at Rs.144 he will get 10% loss. To get 15% gain at what price he has to sell the clock ?

$\par&space;S.P.&space;=&space;144$        $\par&space;loss&space;=&space;10\%$

$\par&space;C.P.$ $=&space;144&space;\times&space;\frac{100}{100&space;-10}$                                                           $\par&space;\lbrack&space;C.P.&space;=&space;S.P.$ $\times&space;\frac{100}{100&space;-&space;loss\%}\rbrack$

$144&space;\times&space;\frac{100}{90}&space;=&space;160$

$\par&space;Required&space;S.P.&space;=&space;15\%$

$\par&space;S.P.&space;=$ $160&space;\times&space;\frac{100&space;+&space;15}{100}$

$160&space;\times&space;\frac{115}{100}&space;=&space;184$