A can do a piece of work in 12 days while B alone can do it in 15 days. With the help of C they can finish it in 5 days. If they are paid Rs. 960 for the whole work how much money A gets ?
let c can complete the work in x days.
1/12 + 1/15 + 1/x = 1/5
1/x = 2/15 - 1/12
x = 20.
thier efficiencies are 1/12, 1/15, 1/20
i.e; 5, 4, 3
If they are paid Rs. 960Â
the money get by A is 5/(5+4+3) *960
= (5/12) *960
= 400.
so the answer is option D.
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