Answer:
Joe walked [tex]\frac{5}{9}[/tex] miles/hour.
Step-by-step explanation:
Joe walked [tex]\frac{4}{9}[/tex] of a mile in [tex]\frac{4}{5}[/tex] of an hour.
We can rewrite this statement as
Joe walked in each hour = [tex]\frac{\frac{4}{9} }{\frac{4}{5} }[/tex]
= [tex]\frac{4}{9}[/tex] × [tex]\frac{5}{4}[/tex]
= [tex]\frac{5}{9}[/tex] miles per hour.
Joe walked [tex]\frac{5}{9}[/tex] miles/hour.