If selling price is doubled, the profit triples. Find the profit percent?	Choices.
A) 108%
B) 100%
C) 120%
D) 900%
E) 160%
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%
<result>B</result>
If selling price is doubled, the profit triples. Find the profit percent?