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?
Q1. 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?
Answer: Rs0.11
Explanation: 5 goats ≡ 1 cow, so 20 cows + 40 goats = 28 cow-equivalents for 10 days = 280 cow-days costs Rs. 460; 50 cows + 30 goats = 56 cow-equivalents for 12 days = 672 cow-days; cost = 672/280 × 460 = Rs. 1,104.