Question

Pen aRe bought at 12for a rupee and sold at 9for a rupee. Find the gain

Answer 1

$\underline{\bold{Given:-}}$

C.P. of pen = 12 rupees

S.P. of pen = 9 rupees

$\underline{\bold{To\:find:-}}$

Gain

$\underline{\bold{Theory:-}}$

Gain is defined as the difference between S.P. and C.P.

$\boxed{\bold{Gain \: = \: S.P. \: - \: C.P.}}$

$\underline{\bold{Solution:-}}$

$\bold{In \: the \: given \: question,} \\ \\\bold{ C.P. \: is \: greater \: than \: S.P. }\\ \\ \bold{So ,\: there \: will \: be \: loss .}\\ \\ Loss \: = C.P. - S.P. \\ \\ Loss = 12 - 9 \\ \\ \boxed{ Loss= 3 \: rupees} \\ \\ \bold{but, \: if \: we \: want \: to \: find \: the \: gain} \\ \\ Then, \\ \\ Gain \: = \: S.P. \: - \: C.P. \\ \\ Gain \: = \: 9 - 12 \\ \\ \boxed{Gain = - 3 \: rupees}$

So, the gain is of -3 rupees and loss is of 3 rupees.