A person purchases 8 pens for ₹ 10 and sells 10 pens for ₹ 8. How much profit or loss does he ma

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7.Profit and Loss

hard

A person purchases $8$ pens for ₹ $10$ and sells $10$ pens for ₹ $8.$ How much profit or loss does he make in ?

A

$30 \%$ gain

B

$30 \%$ loss

C

$36 \%$ gain

D

$36 \%$ loss

Solution

Price at which he bought the pencil $=₹ \frac{10}{8}=₹ 1.25$

Price at which he sold the pencil $=₹ \frac{8}{10}=₹ 0.80$ $\%$

Profit or loss $=\frac{0.8-1.25}{1.25}=\frac{-0.45}{1.25}=-36 \%$

$\%$ Profit or loss $=\frac{8 \times 8-10 \times 10}{10 \times 10} \times 100=\frac{-3600}{100}=-36 \%$

$\therefore \quad \%$ loss $=36 \%$

Standard 13

Quantitative Aptitude

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