A takes as much time as B and C together to complete a work. While A and B together can do this piece of work in 10 days
A takes as much time as B and C together to complete a work. While A and B together can do this piece of work in 10 days. C alone can do this piece of work in 50 days. In how many days will this work be completed by B alone?
(a) 20 days
(b) 28 days
(c) 30 days
(d) none of these
Sol:
