Answer:
\(3 mi/hr\)
Step-by-step explanation:
The rate of miles per hour refers to the speed, which is calculated with:
\(s=\frac{d}{t}\)
Where:
\(d=\frac{2}{3}mi\)
\(t=\frac{2}{9}hour\)
Replacing all values, we have:
\(s=\frac{\frac{2}{3}mi}{\frac{2}{9}hour}=\frac{18}{6} mi/hour\\s=3 mi/hr\)
Therefore, the ratio is
\(3 mi/hr\)