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January 26, 2015

January 26, 2015

Posted by **mike** on Saturday, September 28, 2013 at 12:20am.

- math -
**Larry**, Saturday, September 28, 2013 at 1:27am64*15 = 12n

let n be number of workers

divide both sides by 12

(64*15)/12 = (12n)/12

80 = n

thus it takes 80 men to complete the job in 12 days.

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