By selling 10 pencils for a rupee a man loses 15%. How many for a rupee should he sell in order to gain 15%?  Choices: A) 8.39 B) 6.39 C) 7.39 D) 9.39 E) 2.39

Rationale: 85 % - - - 10 115 % - - - ? 85 / 115 * 10 = 7.39 answer : c
Answer: C