A and B can do a piece of work in 10 days.B and C can do it in 12 days. A and C can do it in 15 days. How long will A take to do it alone?

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?

A can do a piece of work in 4 hours. (B + C) can do the same work in 3 hours. (A + C) can do the same work in 2 hours. In how many hours will B do this work alone ?

X can do a piece of work in 40 hours. He works at it for 8 hours and then Y finishes the work in 16 hours. How long will they together take to complete the work?

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 ?