I bought two books; for Rs.480. I sold one at a loss of 15% and other at a gain of 19% and then I found each book was sold at the same price. Find the cost of the book sold at a loss?  Options
A) rs . 28 B) rs . 280 C) rs . 140 D) rs . 70 E) rs . 80

Rationale: x * ( 85 / 100 ) = ( 480 - x ) 119 / 100 x = 280 answer : b
Answer: B