There are 60 minutes in one hour, so the car traveled 360 miles in 4 hours + 30 minutes/60 minutes/hour = 4.5 hours.

In one hour, the car travels 360 miles / 4.5 hours = <<360/4.5=80>>80 miles/hour.

# Answer

80
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
A car traveled 360 miles in 4 hours and 30 minutes. What was its speed in miles per hour?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
80
A car traveled 360 miles in 4 hours and 30 minutes. What was its speed in miles per hour?
train