If M1 men can do W1 work in D1 days working H1 hours per day and M2 men can do W2 work in D2 days working H2 hours per day then

50 persons can do a work in 12 days, working 6 h per day. 60 persons can do the same work in 8 days, working x h per days.The value of x is

A can do a piece of work in 6 days working 8 hours a day while B can do the same work in 4 days working 10 hours a day. If the work has to be completed in 5 days, so how many hours do they need to work together in a day?

Working 5 hours a day. A can' complete a work in 8 days and working 6 hours a day, B can complete the same work in 10 days. Working 8 hours a day, they can jointly complete the work in

Working 8 hours a day, 12 men can do a work in 30 days. Working 4 hours a day, 18 men can do the work in 30 d a y s b. 40 d a y s c. 45 d a y s d. 50 d a y s

18 men can construct 200 m long wall in 16 days working 9 hours per day. In how many days can 36men construct 500 m long wall working 6 hours per day?