In the first two hours of the trip, Julissa drove 120 miles. In the next hour, she traveled only 48 miles. What was Julissa's average speed in miles per hour (mph) for the three-hour drive?
Average speed is found using the formula (total distance)/(total time). The total time is 3 hours. The total distance is 120 + 48 = 168. Therefore, her average speed is 168/3= 56 Miles per hour
