Assume that 20 cows and 40 goats can be kept for 10 days for Rs.460. If the cost of keeping 5 goats is the same as the cost of keeping 1 cow, what will be the cost for keeping 50 cows and 30 goats for 12 days?	Choose the correct choice from the following answers.
A) Rs.1104  B) Rs.1000  C) Rs.934  D) Rs.1210  E) Rs.1410
Explanation :   Rs.1104ssume that cost of keeping a cow for 1 day = c ,   cost of keeping a goat for 1 day = g   Cost of keeping 20 cows and 40 goats for 10 days = 460   Cost of keeping 20 cows and 40 goats for 1 day = 460/10= 
<gadget id="calculator">460/10</gadget>
<output>46</output>
46=&gt; 20c + 40g = 46   =&gt; 10c + 20g = 23 ---(1)   Given that 5g = c   Hence equation (1) can be written as 10c + 4c = 23 =&gt; 14c =23   =&gt; c=23/14   cost of keeping 50 cows and 30 goats for 1 day   = 50c + 30g   = 50c + 6c (substituted 5g = c)   = 56 c = 56×23/14   = 92   Cost of keeping 50 cows and 30 goats for 12 days = 12×92 = 1104   Rs.1104nswer : Option Rs.1104
<result>A</result>
Assume that 20 cows and 40 goats can be kept for 10 days for Rs.460. If the cost of keeping 5 goats is the same as the cost of keeping 1 cow, what will be the cost for keeping 50 cows and 30 goats for 12 days?