by **abdulsaboor** » Sun Oct 14, 2012 10:47 am

3.

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

A. 200/3

B. 100

C. 316/3

D. 120

Explanation:

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.

Profit % =x/x *100%

=100%