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May 23, 2015

Homework Help: algebra

Posted by jamia on Thursday, March 13, 2008 at 6:25pm.

four men qant to cross a bridge. they all begein on the same side. its night and they only have one flash light with them. at most two men can cross the bridge at the same time,and any party who crosses, either one or two people musy have a flashlight wit them.
the flashlight be walked back and forth not thrown etc. each man walks at a different speed. a pair must walk at the pace of the slower man. man one needs one minute to cross the bridge man two needs 2 minutes,man 3 needs 5 minutes,man four needs 10 minutes.
how can all the men get across the bridge in 17 minutes

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