By Selling 80, ball pens for Rs., 140 , a retailer loses 30 % . How many ball pens should he sell fo

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7.Profit and Loss

hard

By Selling $80\, ball$ pens for $Rs.\, 140$, a retailer loses $30 \% .$ How many ball pens should he sell for $Rs.\,104$ so as to make a profit of $30 \% ?$

A

$32$

B

$52$

C

$48$

D

$42$

Solution

$C.P.$ of 80 ball pens $=140 \times \frac{100}{70}=₹ 200$

For a gain of $30 \%,$ $S.P.$ $=\frac{200 \times 130}{100}=₹ 260$

$\therefore \quad ₹ 260=80$ ball pens

$\therefore \quad ₹ 104=\frac{80}{260} \times 104=32$ ball pens

Standard 13

Quantitative Aptitude

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