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enthada | 14:28 Thu 18th May 2006 | Quizzes & Puzzles
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Thirty men take 20 days to complete a job working 9 hours a day.How many hour a day should 40 men work to complete the job
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6.75 hours a day - to complete the job in 20 days.
In reality, 12 hours to complete in 20 days. More workmen means more to stop and chat to.

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