Question

a man puchased a watch for 400 rs and sold it at a gain of 20% of the selling price , the profit percent is ?

Answer 1

$man \: purchased \: a \: watch \: of \: 400 \: rs \\ sold \: with \: 20\% \: profit \: . \: therefore \: \ \\ \: sellin \: price \: of \: watch \: = \: 400 \ + 20\% \\ = 480rs \: \\ profit \: \%age \: = \frac{480 - 400}{400} \times 100 \\ = 20\%$
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