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

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%
		x