Question

find CP of an article for which SP = Rs 720 and gain = 20%​

Answer 1

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Given -

SP of article, Gain percent (%)

To find -

CP of article.

To find CP we need to apply the formula :

$\frac{SP \: \times \: 100}{100 \: + \: profit\%}$

This formula will be applied when profit percent is given.

To find CP when loss percent is given :

$\frac{SP \: \times \: 100}{100 \: - \: loss\%}$

In this question profit percent is given, so we need to apply profit percent formula to find CP.

SP = Rs 720

Profit (%) = 20 %

$\frac{SP \times 100}{100 + profit\%} \\ = \\ \frac{720 \times 100}{100 + 20} \\ \\ = \frac{720 \times 100}{120} \\ \\ = 600$

The CP of article is Rs 600.