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The expression is 11 gallons to 11 quarts.

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The ratio is \"\".

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The fraction is \"\"

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\"\"            (1 gallon = 4 quarts)

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\"\"          (Divide numerator and denominator by their GCF 4)

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\"\"                      (Cancel common terms)

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\"\"\"\"

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Written in simplest form , the ratio is 4 to 1.