Time And WorkPractice Questions

If 6 men and 8 boys can do a piece of work in 10 days while 26 men and 48 boys can do the same work in 2 days, the time taken by 15 men and 20 boys in doing the same work will be:

A can do a piece of work in 'n' days. B is 25% more efficient than A. C is 20% less efficient than B. If A and C together can complete the work in 15 days, find the value of 'n'.

Three pipes A, B and C can fill a tank in 6 hours. After working at it together for 2 hours, C is closed and A and B can fill the remaining part in 7 hours. The number of hours taken by C alone to fill the tank is:

A contractor undertook to do a piece of work in 9 days. He employed certain number of men but 6 of them were absent from the very first day and the rest could finish the work in 15 days. Find the number of men originally employed.

A contractor agrees to complete a work in 50 days and employs 20 men. After 25 days, he finds only 40% work is completed. How many additional men should be employed to complete the work on time?

A does half as much work as B in three-fourth of the time. If together they take 18 days to finish a work, how much time will B take to do it alone?

A can do a work in 15 days. B can do it in 20 days. They work together for 4 days, then A leaves. After 2 more days, A rejoins. How much more time is needed to complete the work?

A piece of work can be done by 6 men and 5 women in 4 days or by 3 men and 4 women in 6 days. How many days will it take for 9 women to complete the work?

A, B and C contract a work for Rs. 550. A and B together are supposed to do 7/11 of the work. How much does C get if the work is distributed in proportion to their working capacity?

A and B working together can finish a job in 30 days. B and C working together can finish it in 20 days. C and A working together can finish it in 24 days. In how many days will B alone finish the job?