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.  Options.
A) 130 %	B) 140 %	C) 150 %	D) 260 %	E) 170 %

Rationale: "explanation : let the c . p . = x , then s . p . = ( 130 / 100 ) x = 13 x / 10 new s . p . = 2 ( 13 x / 10 ) = 26 x / 10 profit = 26 x / 10 - x = 26 x / 10 profit % = ( profit / c . p . ) * 100 = > ( 26 x / 10 ) * ( 1 / x ) * 100 = 260 % option d"
Answer: D