Answer:
4 mph
Step-by-step explanation:
If we convert [tex]1\frac{1}{3}[/tex] hours to minutes, we get 90 minutes. She runs 6 miles in 90 minutes. We can now use ratios to get how many miles she runs in 60 minutes/1 hour by using a ratio of 1.5.
mi : min
6 : 90
4 : 60
She runs 4 miles in 60 minutes.