A man gains 20% by selling an article for a certain price. If the sells it at double the price, the percentage of profit will be:	Choose the correct choice from the following:
A) 130  B) 220  C) 140  D) 120  E) 145
C   140%   Let C.P. = $x.   Then, S.P. = $(12% of x) = $6x/5   New S.P. = 2 * 6x/5 = $12x/5   Profit = 12x/5 - x = $7x/5   Profit = 7x/5 * 1/x * 100 = 140%.
<result>C</result>
A man gains 20% by selling an article for a certain price. If the sells it at double the price, the percentage of profit will be: