If selling price is doubled, the profit triples. Find the profit percent.
Choose one.
A) 200/3
B) 100
C) 316/3
D) 120
E) None of these
Explanation :   Let the C.P. be x and the S.P. be y   So the profit is (y - x) ---------------------------- (1)   Now, the S.P. is doubled. So the new S.P. = 2y   The new profit = (2y - x)   Given that when S.P. is doubled, profit increases 3 times   =&gt; New profit = 3 * old profit   =&gt; (2y - x) = 3(y - x)   =&gt; y = 2x   So, the profit = (y - x) = (2x - x) = x   % profit = (x/x∗100)% = 100%   Answer : 100
<result>B</result>
If selling price is doubled, the profit triples. Find the profit percent.