Question

A dealer sold two T.V. sets for Rs. $2400$ each, gaining $20\%$ on one set and losing $20\%$ on the other set. Find his net gain or loss .

Answer 1

S.P.of each T.V.set as given=$2400$ Rs.
Case 1:
Gain on T.V.set=$20\%$
$C.P=\left[\frac{100}{100+gain}\right]\times S.P\Rightarrow \left[\frac{100}{120}\right]\times 2400\Rightarrow 2000Rs.$
Case 2:
Loss on T.V. set=$20\%$
$C.P=\left[\frac{100}{100-loss}\right]\times S.P\Rightarrow \left[\frac{100}{80}\right]\times 2400\Rightarrow 3000Rs.$
Total C.P.=$2000+3000=5000Rs.$
Total S.P.=$2400+2400=4800Rs.$
$Loss=5000-4800=200Rs.$