Time And Work

41 A and B can do a piece of work in 10 h. B and C can do it in 15 h, while A and C take 12 h to complete the work. B independently can complete the work in

42 Three men, four women and six children can complete a work in seven days. A woman does double the work a man does and a child does half the work a man does. How many women alone can complete this work in 7 days?

43 3 men can do a piece of work in 6 days. 5 women can do the same work in 18 days. If 4 men and 10 women work together, then how long will it take to finish the work?

44 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 in 2 days, the time taken by 15 men and 20 boys in doing the same type of work will be

45 50 men or 80 women can finish a job in 50 days. A contractor deploys 40 men and 48 women for this work, but after every duration of 10 days, 5 men and 8 women are removed till the work is completed. In how many days can the said work be completed?

46 5 men can prepare 20 items in 8 days working 6 hours a day. Then in how many days can 9 men prepare 30 items working 8 hours a day?

47 10 women can complete a work in 7 days and 10 children take 14 days to complete the work. How many days will 5 women and 10 children take to complete the work?

48 20 men can cut 30 trees in 4 h. If 4 men leave the job, how many trees will be cut in 12 h?

49 36 workmen are employed to finish a certain work in 48 days. But it is found that in 24 days only $$\frac{2}{5}$$ work is done. How many more men must be employed to finish the work in time?

50 Sakshi can do a piece of work in 20 days. Anura is 25% more efficient than Sakshi. The number of days taken by Anura to do the same piece of work is