Answer:
62.6 mph
Explanation:
156.5 / 2.5 = 62.6 mph
For mixed speed journeys finding average is to divide the total distance travelled by the total time spent traveling. This will give you your average speed. . So if travelled 50 mph for 3 hours, 60 mph for 2 hours, and 70 mph for 1 hour, your average speed was about 57 mph.