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 answer.
A) He Gained Rs. 200  B) He lost Rs. 200  C) He neither gained nor lost  D) None of the above  E) He lost Rs. 400
Explanation:   The CP of profitable cow = 9900/1.1= 
<gadget id="calculator">9900/1.1</gadget>
<output>9_000</output>
9000   and profit= Rs. 900   The CP of loss yielding cow = 9900/0.8= 
<gadget id="calculator">9900/0.8</gadget>
<output>12_375</output>
12375   and loss= Rs. 2475   so, the net loss = 2475 - 900= 
<gadget id="calculator">2475 - 900</gadget>
<output>1_575</output>
1575. Answer: 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?