Given:
The table shows the number of gallons used to reach the distance by each car.
To find the car that had the highest number of miles per gallon:
Let us find the number of miles per gallon for each car.
For a car A,
[tex]\begin{gathered} \frac{Total\text{ miles}}{Number\text{ of gallons}}=\frac{106}{5} \\ =21.2\text{ miles per gallon} \end{gathered}[/tex]
For a car B,
[tex]\begin{gathered} \frac{Total\text{ miles}}{Number\text{ of gallons}}=\frac{204}{10} \\ =20.4\text{ miles per gallon} \end{gathered}[/tex]
For a car C,
[tex]\begin{gathered} \frac{Total\text{ miles}}{Number\text{ of gallons}}=\frac{298}{15} \\ =19.87\text{ miles per gallon} \end{gathered}[/tex]
For a car D,
[tex]\begin{gathered} \frac{Total\text{ miles}}{Number\text{ of gallons}}=\frac{392}{20} \\ =19.6\text{ miles per gallon} \end{gathered}[/tex]
Therefore, car A has the highest number of miles per gallon.
