Question
If selling price is doubled, the profit triples. Find the profit percent.
Answer: Option B
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Let C.P. be Rs. x and S.P. be Rs. y.
Then, 3(y - x) = (2y - x) y = 2x.
Profit = Rs. (y - x) = Rs. (2x - x) = Rs. x.
So, Profit % = \(\left(\frac{x}{x}\times100\right)\) % = 100%
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