Question 9 of 15
58 % Complete
Catherine is traveling home for Thanksgiving break. She travels for 3 hours at the speed of 72 mph, and for 2 hours at the speed of 78 mph. When she reaches home, what will her average speed for the trip have been?
A. 72
B. 73
C. 74
D. 75
C. 74
Explanation: 72 + 72 + 72 + 78 + 78 = 372
372/5 = 74.4
Average speed = 74
