Answer:
60 miles per hour
Explanation:
This is a fraction equal to 
300 miles ÷ 5 hours 
 
We want a unit rate where 
1 is in the denominator, 
so we divide top and bottom by 5 
 
300 miles ÷ 5 
5 hours ÷ 5 
= 
60 miles 
1 hour 
= 
60 miles 
hour 
= 60 miles per hour