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 S.P. = 144        \par loss = 10\%

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

144 \times \frac{100}{90} = 160

\par Required S.P. = 15\%

\par S.P. = 160 \times \frac{100 + 15}{100}

160 \times \frac{115}{100} = 184