Hello!
We can solve this exercise using the rule of three:
[tex]\begin{gathered} \frac{5\text{ miles}}{x\text{ miles}}=\frac{46\text{ minutes}}{1\text{ minute}} \\ \\ 46x=5 \\ x=\frac{5}{46} \\ \\ x\cong0.11\text{ miles per minute} \end{gathered}[/tex]