If profit is left(frac{1}{11}right) th of selling price, profit percent?

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7.Profit and Loss

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If profit is $\left(\frac{1}{11}\right)$ th of selling price, what is the profit percent?

A

$9 \frac{1}{11}$

B

$10$

C

$8 \frac{1}{3}$

D

$11 \frac{1}{9}$

Solution

$P =\frac{1}{11} \times S \cdot P$

$( S.P – C.P ) 11= S.P$

$11 S.P -11 C \cdot P = S.P$

$10 S.P =11 CP$

$\frac{C P}{S P}=\frac{10}{11}$

$P \%=\frac{1}{10} \times 100=10 \%$

Standard 13

Quantitative Aptitude

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