A dishonest dealer use a scale of 90, cm instead of a metre scale and claims to sell at cost price.

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7.Profit and Loss

hard

A dishonest dealer use a scale of $90\, cm$ instead of a metre scale and claims to sell at cost price. His profit is in $\%$

A

$9$

B

$10$

C

$12$

D

$11 \frac{1}{9}$

Solution

Gain $\%=\left(\frac{10}{90} \times 100\right) \%=11 \frac{1}{9} \%$

Standard 13

Quantitative Aptitude

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