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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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