Four milkmen A, B, C and D hired a pasture. A had 9 cows that graze for 5 months, B had 12 cows that graze for 3 months, C had 16 cows that graze for 2 months and D had 10 cows that graze for 4 months. If A paid Rs.225 then what was the rent of the pasture?

765

Let the rent for one cow = Rs.1/pm

Then, rent for each partners = no. of cows × time

            A   :   B     :   C     :   D

No.   :  9   :  12     :    16   :  10

Time :   5  :   3      :     2    :  4  

----------------------------------------------------

 Rent -  45 :  36    :   32    :   40   = 153

So rent paid by A = 45R = 225

1R = 5

Total Rent = 153R = 153 × 5 = Rs.765