Four milkmen rented a pasture A grazed 18 cows for 4 months,

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Four milkmen rented a pasture A grazed 18 cows for 4 months, B, 25 cows for 5 months and D, 21 cows for 3 months. If A's share of rent is Rs. 360, the total rent of the field is ?

1. Rs. 1500
2. Rs. 1600
3. Rs. 1625
4. Rs. 1650

Correct Option: C

Ratio of rent = (18 x 4) : (25 x 2) : (28 x 5) : (21 x 3)
= 72 : 50 : 140 : 63
Let the total rent = Rs. N
Then A's share = Rs. (N x 72)/325 = Rs. 72N / 325
∵ 72N / 325 = 360
∴ N = (325 x 360)/72 = Rs. 1625