If a man lost 7% by selling oranges at the rate of 21 a rupee at how many a rupee must he sell them to gain 42%?
Answers
A) 12.75 B) 11.75 C) 8.75 D) 15.75 E) 13.75

Rationale: "93 % - - - - 21 142 % - - - - ? 93 / 142 * 21 = 13.75 answer : e"
Answer: E