A contractor undertakes to make a road in 40 days and employs 25 men. After 24 days, he finds that only one-third of the…

A, B and C can separately do a work in 12, 15 and 20 days respectively. They started to work together but C left after 2…

The time taken by 4 men to complete a job is double the time taken by 5 children to complete the same job. Each man is t…

A can do a work in 10 days. The efficiency of A is 20% less than B. How many days B need to finish the same work?

Sakshi can do a piece of work in 20 days. Tanya is 25% more efficient than Sakshi. The number of days taken by Tanya to …

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…

A can finish a work in 24 days, B in 9 days and C in 12 days. B and C start the work but are forced to leave after 3 day…

A and B can together finish a piece of work in 30 days. They worked on it 20 days and then B left. The remaining work wa…