Answer:
27.69 miles/hour
Step-by-step explanation:
Given that,
Distance covered by Mary = 45 1/2 = 45.5 miles
Time, t = 1.625 hour
We need to find how far will she ride in one hour.
Let it is x.
1.625 hour = 45.5 miles
1 hour [tex]\dfrac{45}{1.625}\\\\=27.69\ \text{miles/hour}[/tex]
So, she will ride at the rate of 27.69 miles/hour.