A trader buys 500, kg of cotton for Rs., 9,000.10 % of this cotton is spoiled due to rain. At what r

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7.Profit and Loss

easy

A trader buys $500\, kg$ of cotton for $Rs.\, 9,000.10 \%$ of this cotton is spoiled due to rain. At what rate ($Rs./ kg$) should he sell the rest to earn $10 \%$ profit?

A

$25$

B

$30$

C

$22$

D

$20$

Solution

Remaining cotton $=90 \%(500)=450 kg$

$S.P$ with $10 \%$ profit $=110 \%(9000)=₹ 9900$

$S.P$ of $1 kg$ of $cotton =\frac{9900}{450}=Rs. 22$

Standard 13

Quantitative Aptitude

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