Answer:
To solve this problem, we can use the formula:
time = distance/speed
Distance is the distance traveled, and speed is the car's speed.
Substituting the given values, we get:
time = 300 km / 60 km/h = 5 hours
Therefore, it would take the car 5 hours to travel 300 km at 60 km/h. Rounded to the nearest whole number, the answer is 5 hours.