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April 23, 2014

Homework Help: 7th grade math

Posted by joe on Monday, September 3, 2012 at 1:07pm.

What's the quickest amount of time that all four kids can get across a bridge with on kid always going back to get the other.

1 kid took 5 minutes
1 kid took 10 minutes
1 kid took 20 minutes
1 kid took 25 minutes

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