If selling price is doubled, the profit triples. Find the profit percent:  Choose the correct choice from the following
A) 66 2/3
B) 100
C) 105 1/3
D) 120
E) 150
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: