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A fish tank holds 90 gallons of water is 40% full. How many more gallons are needed to fill the tank?
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A fish tank holds 90 gallons of water is 40% full. How many more gallons are needed to fill the tank?

User Julealgon
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110 gallons because you know that 90 is 40% of that so take 90 and double it and then add 20 to it because that is 20% left
User Webjockey
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