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April 19, 2014

Homework Help: Mathematics

Posted by Celina on Monday, May 28, 2012 at 11:11am.

Twelve man take 6 hours to finish a piece of work. After the 12 men have worked for 1 hour, the contractor decides to call in 8 men so that the work can be completed earlier. How many more hours would 20 men take to complete the remaining work?

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