A and B working separately can do a piece of work in 9 and 15 days respectively. If they work for a day alternatively, w…

A and B together can do a piece of work in 8 days, B and C together in 10 days, while C and A together in 6 days, if the…

Two pipes A and B can fill a tank in 36 min. and 45 min. respectively. Another pipe C can empty the tank in 30 min. Firs…

If 10 persons can do a job in 20 days, then 20 person with twice the efficiency can do the same job in:

A can do a piece of work in 15 days, which B can do it in 10 days. B worked at it for 8 days. A can finish the remaining…

A can do a piece of work in 12 days while B alone can do it in 15 days. With the help of C they can finish it in 5 days.…

A, B and C can complete a piece of work in 10, 12 and 15 days respectively. A left the work 5 days before the work was c…

If 20 women can lay a road of length 100m in 10 days. 10 women can lay the same road of length 50m in = ?