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Question

If selling price is doubled, the profit triples. Find the profit percent.

Options:
A .   \(66\frac{2}{3}\) %
B .  100
C .   \(105\frac{1}{3}\) %
D .  120
Answer: Option B

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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