Ben's family left for vacation after his dad came home from work on Friday. The entire trip was 600 mi. Dad was
very tired after working a long day and decided to stop and spend the night in a hotel after 4 hours of driving. The
next morning, Dad drove the remainder of the trip. If the average speed of the car was 60 miles per hour, what was
the remaining time left to drive on the second part of the trip? Remember: Distance = rate multiplied by time.