An aquarium tank holds 475 liters of water. How much is this in gallons? Use the following conversion: 1 gallon is 3.8 liters.

well, we know 1 gallon is 3.8 liters, how much is 475 liters in gallons then?

[tex]\bf \begin{array}{ccll} gallons&liters\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ 1&3.8\\ g&475 \end{array}\implies \cfrac{1}{g}=\cfrac{3.8}{475}\implies \cfrac{1\cdot 475}{3.8}=g[/tex]