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A fish tank that holds gallons of water is full.  

Create a drawing like Louis’s in problem 5-4 to represent this situation.

  1. How many gallons are in the tank now? How many more gallons are needed to fill the tank?

    Use equivalent ratios to solve this problem

    Think about a Giant One that you could use to find the value of .

    To find how many gallons are needed to fill the tank subtract the number of gallons in the tank now from the total number of gallons the tank holds.