Question

If a,b,c can do a work in 6 days. a and b do it on 8 days. b and c do it on 12 days. den c and a is ?

Answer 1

Answered Jul 30, 2017

A does work /day = 1/10

let B finish the work in x days means

B does work/day = 1/x

since they finish the work together in 6 days

(A + B)’s work/day =1/6

1/10 +1/x = 1/6

1/x = 1/15

x = 15