By selling 8 pens for a rupee a woman loses 25%. How many for a rupee should he sell in order to gain 25%?
Answers:
A) 2  B) 14  C) 3  D) 5  E) 6

Rationale: "d 75 % - - - 8 125 % - - - ? 75 / 125 * 8 = 5"
Answer: D