A does 80% of a work in 20 days. He then calls in B and they together finish the remaining work in 3 days. How long B alone would take to do the whole work?

A can do a piece of work in 30 days and B in 20 days. They work together for 4 days and B leaves. A will finish remaining work in

Two persons A and B complete a task in 15 days, when they work together. Person A completes the task in 20 days if he works alone. How many days will B take to finish the task alone?

A takes twice as much time as B or thrice as much time as C to finish a piece of work. Working together, they can finish the work in 2 days. A can do the work alone in:

A can complete a particular task in 25 days whereas B can finish that task in 15 days. A and B together do the work for 5 days and then A leaves the task. How many days will B take to complete the re…

Mohan can do a bit of work in 25 days which can be completed by Sohan in 20 days. Both together labour for 5 days and afterward Mohan leaves off. How long will Sohan take to complete the remaining wo…