Question

A and b together can do a piece of work in 4 days. While a alone cand do it in 6 days. Then the number of days that be can take to complete the work is

Answer 1

A and B can do a piece of work in 4days
i.e..A+B=4
in one day =1/4
a alone work in 6 days
in one day =1/6
let b alone work be xdays
in one day=1/x
1/6+1/x=1/4
by solving x=12
so b alone can do work in 12 days