Answer:
24 mph
Explanation:
as we need speed in miles per hour.
So first we convert time in hours.
total time = 1 hour + 30 minutes
= 1 hour + 30/60 hours
= 1 hour + 0.5 hour
= 1.5 hour
distance traveled = 36 miles
average speed = distance traveled / total time
= 36 / 1.5
= 24 mph