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

Question: If selling price is doubled, the profit triples. Find the profit percent.
[A].

66	2
	3

[B].

100

[C].

105	1
	3

[D].

120

Answer: Option B

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%
		x

Video Explanation: https://youtu.be/dPzF10mGsWE