Answer :
The current units are [tex]\frac{hr}{km}[/tex], in order to turn these units into [tex]\frac{min}{mi}[/tex] you would have to multiply by [tex]\frac{60min}{hr}[/tex] and [tex]\frac{km}{0.62mi}[/tex] or [tex]\frac{60minkm}{0.62hrmi}[/tex].
The current units are [tex]\frac{hr}{km}[/tex], in order to turn these units into [tex]\frac{min}{mi}[/tex] you would have to multiply by [tex]\frac{60min}{hr}[/tex] and [tex]\frac{km}{0.62mi}[/tex] or [tex]\frac{60minkm}{0.62hrmi}[/tex].