A man gains 30% 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 options:
A) 130%
B) 140%
C) 150%
D) 260%
E) 170%
Explanation:   Let the C.P. = x,   Then S.P. = (130/100)x = 13x/10   New S.P. = 2(13x/10) = 26x/10   Profit = 26x/10 - x = 26x/10   Profit% = (Profit/C.P.) * 100   =&gt; (26x/10) * (1/x) * 100 = 260 %   Option 260%
<result>D</result>
A man gains 30% by selling an article for a certain price. If he sells it at double the price, the percentage of profit will be.