On the first part of a 317 mile trip, Leah averaged 58 miles per hour. She averaged only 52 mph on the last part of the trip because of an increased volume of traffic. The total time of the trip was 5 hours and 45 minutes. Find the amount of time that Leah spent driving each speed.
Let her travel 'x' hours at 58 miles per hour, therefore time driven at 52 miles per = ...
This shows how to determine the amount of time spent driving each speed in a given situation.