The driver's speed is 48 miles per hour
Here, we want to calculate the speed
Mathematically;
[tex]\begin{gathered} \text{speed = }\frac{dis\tan ce}{\text{time}} \\ \\ =\text{ }\frac{288\text{ miles}}{6\text{ hours }}\text{ = 48 miles per hour} \end{gathered}[/tex]