A person buys an article at $1200. At what price should he sell the article so as to make a profit of 40%?
Choose the correct choice from the following options.
A) 1670 B) 1600 C) 1680 D) 1900 E) 1230

Rationale: c 1680 cost price = $ 1200 profit = 40 % of 1200 = $ 480 selling price = cost price + profit = 1200 + 480 = 1680
Answer: C