A man purchases two watches at 560. He sells one at 15% profit and other at 10% loss. Then he neither gains nor lose. Find the cost price of each watch.	Choose the correct option
A) 224, 300	B) 200, 300	C) 224, 336	D) 200, 336	E) None of these
Here, in whole transaction, there is neither gains nor loss, therefore,   Amount of gain in one watch = Amount of loss in other watch   ⇒ 0.15 × 224, 336P1 = 0.10 × 224, 336P2   ⇒ 224, 336P1/224, 336P2=0.10/0.15=23   Also 224, 336P1 + 224, 336P2 = 560   ∴ 224, 336P1 = 2/2+3×560=224   and 224, 336P2 = 560 – 224 = 336   Answer 224, 336
<result>C</result>
A man purchases two watches at 560. He sells one at 15% profit and other at 10% loss. Then he neither gains nor lose. Find the cost price of each watch.