School Construction

Elementary Brain Teaser - August 08, 2022



To begin construction on a new school, a proper foundation must be created.  If it takes two excavators 30 minutes to dig a hole three meters long, three meters wide, and three meters deep, how long (in minutes) would it take the same two excavators to dig a hole 45 meters long, 20 meters wide, and 6 meters deep.

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