Question

A and B can do a piece of work in 12 days. B and C can do it in 5 days while C and A can finsh days In how many days will A, B and C finish it, working together? In how many days will each one of them finish it, working alone?

Answer 1

Acc to question,

A x 5 + B x 7 + C x 13 = Total work

A x 5 + B x 5 + B x 2 + C x 2 + C x 11 = Total work

(A + B) x 5 + (B + C) x 2 + C x 11 = 48

4 x 5 + 3 x 2 + C x 11 = 48

C = 2

Now

C x days = Total work

2 x days = 48

days = 24