Gokul buys 9 horses and 4 cows for Rs. 13,400. if he sells the horses at 20% profit and the cows at 10% profit, then he earns a total profit of Rs. 1880. The cost of a cow is: Select the correct option.
A) Rs. 2200	B) Rs. 2190	C) Rs. 2000	D) Rs. 600	E) None of these
Explanation :   Solution: Let C.P. of each horse and be Rs. X and C.P. of each cow be Rs. Y. then,   9x+4y =13,400 -------&gt; (1)   And, 20% of 9x + 10% of 4y 9 +4= 
<gadget id="calculator">9 +4</gadget>
<output>13</output>
13,400 -------&gt; (1)   And, 20% of 9x + 10% of 4y= 1880.   9x/5 + 2y/5 = 1880 =&gt; 9x+2y =9400 -------&gt; (2)   solving (1) and (2), we get : x = 600 and y =2000.   .'. cost price of each cow = Rs. 2000.   Answer : Rs. 2000
<result>C</result>
Gokul buys 9 horses and 4 cows for Rs. 13,400. if he sells the horses at 20% profit and the cows at 10% profit, then he earns a total profit of Rs. 1880. The cost of a cow is: