SOLUTION: if 3 men take 3 day to complete a piece of work.how may days will 2 men take to complete the same work?

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Question 509745: if 3 men take 3 day to complete a piece of work.how may days will 2 men take to complete the same work?
Answer by lwsshak3(11628) About Me  (Show Source):
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if 3 men take 3 day to complete a piece of work.how may days will 2 men take to complete the same work
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3 men working 3 days to complete the job=9 man-days
Therefore, 2 men must work 4.5 days to complete the same job.