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 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
$11 \frac{1}{9}$
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