Start by passing the miles into kilometers, taking into account that 1 mile is approximately 1.6km
![5mi\cdot\frac{1.6\operatorname{km}}{1mi}\cong8\operatorname{km}]()
pass the kilometers to meters taking into account that 1 km is 1000m
![8\operatorname{km}\cdot\frac{1000m}{1\operatorname{km}}=8000m]()
convert the 45 minutes to hours taking into account that 1 hour has 60 minutes
divide the meters he ran by the time it took him to run that distance
He can run about 10666.67 m in 1 hour
another different way to find the equivalences is to write it as relations
![\begin{gathered} 1mi\Rightarrow1.6\operatorname{km} \\ 5mi\Rightarrow x \end{gathered}]()
![(x)/(5mi)=\frac{1.6\operatorname{km}}{1mi}]()
solve for x
![\begin{gathered} x=\frac{1.6\operatorname{km}\cdot5mi}{1mi} \\ x=8\operatorname{km} \end{gathered}]()