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?
Choose the correct choice from the following:  A) 657  B) 280  C) 438  D) 289  E) 427
x*(85/100)   = (480 - x)119/100   x = 280   Answer:280
<result>B</result>
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?