Answer: 5.33 miles per hour.
Step-by-step explanation:
You know: [tex]\frac{4}{5}[/tex] of a mile in nine minute.
Then:
You need to convert 9 minutes to hours (Remember that there is sixty minutes in one hour). Then:
[tex](9min)(\frac{1hour}{60minutes})=\frac{9}{60}hours[/tex]
Now, you need to divide [tex]\frac{4}{5}miles[/tex] by [tex]\frac{9}{60}hours[/tex].
Therefore, the unit rate in miles per hour is:
[tex]=\frac{\frac{4}{5}miles}{\frac{9}{60}hours}\\\\=(\frac{4*60}{5*9})\\\\=5.33\frac{miles}{hour}[/tex]
(5.33 miles per hour)
