If selling price is doubled, the profit triples. Find the profit percent?
Choose the correct answer:
A) 187 B) 100 C) 177 D) 165 E) 122
Let C.P. be Rs. x and S.P. be Rx. y.   Then, 3(y - x) = (2y - x) =&gt; y = 2x   Profit = (y - x) = Rs. (2x - x) = Rs. x   Profit % = x/x * 100 = 100%.   Answer: 100
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If selling price is doubled, the profit triples. Find the profit percent?