four milkmen rented a pasture a grazed 24 cows for 3..., Partnership, General Mathematics

Question:Four milkmen rented a pasture. A grazed 24 cows for 3 months; B 10 cows for 5 months, C 35 cows for 4 months ans D 21 cows for 3 months. If A's share of rent is Rs. 720, the total rent of the field is :

A `Rs. 3000` 
B `Rs. 3200` 
C `Rs. 3250` 
D `Rs. 3300`

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+ AnswerC

+ Explanationsolution:
`A : B : C : D = 24 xx 3 : 10 xx 5 : 35 xx 4 : 24 xx 3 = 72 : 50 : 140 : 63`
 Let  total rent be `Rs. x`. Then,
`A's` share `= Rs. (x xx 72/325)`
`:. (72x)/325 = 720 iff x = (720 xx 325)/72`
  `= 3250`.

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