A does half as much work as B in one-sixth of the time. If together they take 10 days to complete a work. How much time …

A can lay railway track between two given stations in 16 days and B can do the same job in 12 days. With help of C, they…

In two days A, B and C together can finish $$\frac{1}{2}$$ of a work and in another 2 days B and C together can finish …

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 …

A machine P can print one lakh books in 8 hours, machine Q can print the same number of books in 10 hours while machine …

Two pipes A and B can fill a cistern in 12 min and 16 min respectively. Both the pipes are opened together for a certai…

3 men and 7 women can do a job in 5 days, while 4 men and 6 women can do it in 4 days. The number of days required for a…

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…