A man gains 60% by selling an article for a certain price. If he sells it at double the price, the percentage of profit will be. Choose the most appropriate option.
A) 130% B) 320% C) 150% D) 160% E) 170%
Explanation:   Let the C.P. = x,   Then S.P. = (160/100)x = 8x/5   New S.P. = 2(8x/5) = 16x/5   Profit = 16x/5 - x = 16x/5   Profit% = (Profit/C.P.) * 100   =&gt; (16x/5) * (1/x) * 100 = 320 %   Option 320%
<result>B</result>
A man gains 60% by selling an article for a certain price. If he sells it at double the price, the percentage of profit will be.