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August 2, 2015

Homework Help: Math for Liberal Arts

Posted by Rebekah on Tuesday, December 13, 2011 at 3:06am.

You have a 5 minute hour glass and an 8 minute hour glass. You need to cook something for exactly 9 minutes. How will you use the two hour glasses to determine the exact time? There is no way to determine where the halfway mark is with the hourglasses.

Help me please!

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