A is thrice as good as workman as B and therefore is able to finish a job in 60 days less than B. Working together, they can do it in:

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 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

A can do a work in 15 days and B in 20 days. If they work on it together for 4 days, then the fraction of the work that is left is :

A certain number of men can do a work in 60 days. If there were 8 more men, it could be finished in 10 days less. Number of men?

If A and B can finish a work in 10 days, B and C can finish the same work in 12 days, C and A can finish the same work in 15 days; then in how many days can A, B and C together finish half of the wor…