A person sold two cows each for Rs.9900. If he gained 10% on one and lost 20% on the other, then which of the following is true ?
Choose the correct choice from the following answers:
A) He lost Rs. 200	B) He gained Rs. 200	C) Neither he gained nor lost	D) None of the above	E) He gained Rs. 300
Explanation:   In first he got Rs. 990   But in second he lost Rs. 1980   So he lost Rs. 990.   ANSWER IS None of the above
<result>D</result>
A person sold two cows each for Rs.9900. If he gained 10% on one and lost 20% on the other, then which of the following is true ?