Amit and Sumit can plough a field in 4 days. Sumit alone can plough the field in 6 days. In how many days will Amit alon…

25 men with 10 boys can do in 6 days as much work as 21 men with 30 boys can do in days. How many boys must help 40 men …

60 men could complete a piece of work in 250 days. They worked together for 200 days. After that work had to be stopped …

A can do a piece of work in 12 days and B in 20 days. If they together work on it for 5 days, and remaining work is comp…

Tapas works twice as fast as Mihir. If both of them together complete a work in 12 days, Tapas alone can complete it in …

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

A group of workers can complete a piece of work in 50 days, when they are working individually. On the first day one per…

A contractor undertake to do a piece of work in 40 days. He engages 100 men at the beginning and 100 more after 35 days …