Explanation:
BLue car:
45 1/2 miles consumes 1 1/4 gallons of gasoline
The unit rate = number of miles/number of gallons used
Unit rate in miles per gallon = (45 1/2)/(1 1/4)
[tex]\begin{gathered} \text{unit rate = }\frac{91}{2}\div\frac{5}{4} \\ =\frac{91}{2}\times\frac{5}{4}=\frac{455}{8} \\ \text{unit rate = 56.875 miles per gallons} \\ \text{unit rate = 56 7/8 miles per gallon} \end{gathered}[/tex]
Red car:
23 1/5 miles consumes 4/5 gallon of gasoline
Unit rate = (23 1/5)/(4/5)
[tex]\begin{gathered} \text{unit rate = }\frac{116}{5}\div\frac{4}{5}=\frac{116}{5}\times\frac{5}{4} \\ \text{unit rate = }\frac{116}{4} \\ \text{unit rate = 29 miles per gallons} \end{gathered}[/tex]