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Earn 100

Abbot can do some work in 10 days, Bill can do it in 20 days and Clinton can do it in 40 days. They start working in turns with Abbot starting to work on the first day followed by Bill on the second day and by Clinton on the third day and again by Abbot on the fourth day and so on till the work is completed fully. Find the time taken to complete the work fully?

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Important Questions on Time and Work

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A, B and C can do some work in 36 days. A and B together do twice as much work as Calone and A and C together can do thrice as much work as B alone. Find the time taken by Cto do the whole work.
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There are three Taps A, B and C in a tank. They can fill the tank in 10 hrs, 20 hrs and 25 hrs respectively. At first, all of them are opened simultaneously. Then after 2 hours, tap C is closed and A and B are kept running. After the 4th hour, tap B is also closed. The remaining work is done by Tap A alone. Find the percentage of the work done by Tap A by itself. 
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Two taps are running continuously to fill a tank. The 1st tap could have filled it in 5 hours by itself and the second one by itself could have filled it in 20 hours. But the operator failed to realise that there was a leak in the tank from the beginning which caused a delay of one hour in the filling of the tank. Find the time in which the leak would empty a filled tank.
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A can do some work in 24 days, B can do it in 32 days and C can do it in 60 days. They start working together. A left after 6 days and B left after working for 8 days. How many more days are required to complete the whole work?
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A alone can complete a job in 4 4 days. He is twice as fast as B while B is twice as fast as C. If all of them work together, in how many days would the job get completed?
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36 men take 18 days to complete a piece of work. They worked for a period of 8 days. After that, they were joined by 4 more men. How many more days will be taken by them to complete the remaining work?
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Tap M M alone can fill a tank completely in 8 hrs. Another tap N alone can empty the same tank in 12 hrs. If both the taps are opened simultaneously in what time in hours) would the tank get full?
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A 50 x 35 m fishing pond was dug by 250 workers in 18 days. The number of days in which a 70 m x 40 m pond having the same depth can be dug by 300 workers is?