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Math a tank was 1/2 full of water. after 420 gallons had been taken out, it was 1/8 full. find the capacity of the tank?

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If it was 1/2 full, and is now 1/8 full, that means 3/8ths was removed. So 3/8ths of a tank = 420 gallons.

Divide by 3, and you get 1/8th = 140 gallons.

Multiply by 8, and you get 1120 gallons total capacity of the tank.

-John

Posted on Feb 13, 2008

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Posted on Mar 20, 2008

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