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Question:

A barrel holds 60 gallons of water. If a crack in the barrel causes (1/2)gallon to leak out each day, how many gallons of water remain after 2 weeks?

A 53
Explaination

In 2 weeks, or 14 days, 1/2× 14 = 7 gallons leak out, leaving 60 – 7 = 53 gallons.