A can do a piece of work in 10 days and B in 20 days. They begin together but A leaves 2 days before the completion of the work. The whole work will be done in?

A can do a piece of work in 10 days while B can do it in 15 days. They begin together but 5 days before the completion of the work, B leaves off. Find the total number of days for the work to be completed .

A can do a piece of work in 18 days and B in 12 days. They began the work together, but B left the work 3 days before its completion. In how many days, in all, was the work completed ?

A and B can do a piece of work together in 15 days while A alone can do it in 25 days. They start working together but B leaves 5 days before the completion of the work. For how many days did A and B work together?

A can do a piece of work in 10 days, B can do it in 15 days working together they can finish the work in :

A can do a piece of work in 10 days,B in 12 days and C in 15 days.All begin together but A leaves the work after 2 days and B leaves 3 days before the work is finished.How long did the work last?