question_answer

A man gains 20% by selling an article for a certain price. If he sells it at double the price, the percentage of profi will be

A)  40%              

B)  100%

C)  120%             

D)       140%

Correct Answer: D

Solution :

 Let the cost price of article be Rs. 100.            First S.P. = Rs. 120 When the selling price be Rs. 240. Profit =Rs, \[(240-100)\] = Rs. 140 \[\therefore \]   Profit percent \[=\frac{140}{100}\times 100=140%\]