Answer:
1.2 miles per minute
Explanation:
We know that 1 hour has 60 minutes, so if we want to convert 72 miles per hour into miles per minutes, we need to divide by 60 minutes as:
[tex]72\text{ miles per hour }\times\frac{1\text{ hour}}{60\text{ minutes}}=1.2\text{ miles per minute}[/tex]Therefore, Robert drove at 1.2 miles per minute.