A certain number of workers can finish a piece of work in 100 days. If there were 10 workers less, it would take 10 days more for the work to be finished. How many workers were there originally?
Let N be the initial number of workers Speed of N workers = 1 work / 100 days Speed of (N -10) workers = 1 work / 110 days 1 work = 100N = (N -10)110 10N = (N -10)11 10/11 = 1 - (10/N) (10/N) = 1/11 N = 110.
A certain number of men can finish a piece of work in 30 days. If however there were 15 men less it will take 30 days more for the work to be finished. How many men were there originally?
8 woman and 12 men complete a certain piece of work in 9 days. Each woman takes twice the time taken by a man to finish the work. In how many days will 12 men finish the same work
Vinay can do a certain work in 16 days. Shubham is 60% more efficient than Vinay. How many days does Shubham alone take to do the same work?
Six men do a piece of work in 10 days with an effort of 6 hours per day. How many extra men are required for doing the work of double strength in 4 days with an effort of 5 hours per day
