Time And WorkPractice Questions

A can complete a work in 12 days and B can complete the same work in 18 days. How many days will they take to complete the work together?

The ratio of efficiency of A, B and C is 2:3:4. If C alone can complete a work in 12 days, in how many days can A, B and C together complete the work?

A pipe can fill a tank in 6 hours and another pipe can empty it in 8 hours. If both pipes are opened simultaneously, in how much time will the tank be filled?

A and B can do a piece of work in 12 days, B and C in 15 days, and C and A in 20 days. In how many days will A alone complete the work?

A can do a work in 10 days and B can do it in 15 days. They work alternately starting with A. In how many days will the work be completed?

A, B and C together earn Rs. 1620 in 9 days. A and C together earn Rs. 600 in 5 days and B and C together earn Rs. 910 in 7 days. What is the daily earning of B?

24 men can complete a work in 16 days. 32 women can complete the same work in 24 days. 16 men and 16 women started working together. After 8 days, all women left. In how many more days will the remaining men complete the work?

A certain number of men can complete a work in 60 days. If there were 8 more men, the work could be completed in 10 days less. Find the original number of men.

A can finish a work in 18 days and B can do the same work in half the time taken by A. If they work together for 4 days, what fraction of work is left?

20 men working 8 hours a day can complete a work in 21 days. How many hours a day should 28 men work to complete the same work in 15 days?