Final answer:
Without additional information on distance and speed for Cyclist A and B, we cannot calculate their travel times. However, by comparing average speeds of four different cyclists from similar problems, we can conclude that Cyclist 4 had the greatest average speed.
Step-by-step explanation:
To determine how long it takes each cyclist to get home, we need more information, such as the distance they need to travel and their average speed. Nevertheless, we can look at an example from similar physics problems about motion and speed to answer a related question.
Which cyclist traveled with the greatest average speed?
To find this out, we use the formula for average speed, which is the distance traveled divided by the time it takes to travel that distance. For each cyclist:
Therefore, Cyclist 4 traveled with the greatest average speed.