A can do a piece of work in 4 hours, B and C together in 3 hours, and A and C together in 2 hours. How long will B alone take to do it? `8\ hou r s` b. `10\ hou r s` c. `12\ hou r s` d. `24\ hou r s`

Quantity I: A and B together can do a pices of work in 4 days. If A alone can do the same work in 6 days, then B alone can do the same work in? Quantity II: A can do a pices of work in 4 hours, B and C together can do it in 3 hours, while A and C together can do it in 2 hours. How long will B alone take to do it ?

A can do a piece of work in 8 hours while B aline can do it in 12 hours. Both A and B working together can finish the work in time ?

A and B can do a certain piece of work in 8 days, B and C can do it in 12 days and C and A can do it in 24 days. How long would B take separately to do it ?

A can do a piece of work in 24 hours while B alone can do it in 16 hours. If A, B and C working together can finish in 8 hours, in how many hours will C alone do the work?

Ravi can do a piece of work in 15 hours while Raman can do it in 12 hours. How long will both take to do it, woking together?