Answer:
The car took 3 hours to travel 180 miles
Step-by-step explanation:
Constant Speed Motion
An object travels at constant speed if the ratio of the distance traveled by the time taken is constant.
Expressed in a simple equation, we have:

Where
v = Speed of the object
d = Distance traveled
t = Time taken to travel d.
From the equation above, we can solve for t:

The car travels at v=60 mi/h for a distance of d=180 miles. The time taken is:

t = 3 hours
The car took 3 hours to travel 180 miles