You have the following identitiy:
2.5 liters = 0.66 gallon
In order to get an unit rate you divide the amount of given liters by the amount of equivalent gallons, jus as follow:
[tex]\begin{gathered} \frac{2.5liters}{0.66}=3.7878\frac{liters}{gallon} \\ \end{gathered}[/tex]Hence, a convenient unit rate is:
1 liter = 0.264 gallon
1 liter = 0.26 gallon
Then, you have:
