A man gains 50% by selling an article for a certain price. If he sells it at double the price, the percentage of profit will be.  Choose the correct choice from the following:	A) 130%	B) 300%	C) 150%	D) 160%	E) 170%
Explanation:   Let the C.P. = x,   Then S.P. = (150/100)x = 3x/2   New S.P. = 2(3x/2) = 3x/1   Profit = 3x/1 - x 3 /1= 
<gadget id="calculator">3 /1</gadget>
<output>3</output>
3x/1 - x= 3x/1   Profit% = (Profit/C.P.) * 100   =&gt; (3x/1) * (1/x) * 100 = 300 %   Option 300%
<result>B</result>
A man gains 50% by selling an article for a certain price. If he sells it at double the price, the percentage of profit will be.