The athlete's average speed was 300 meters/minute.
To calculate the speed of the athlete we must perform the following operations.
Divide the distance into the total time:
Transform the value from seconds to minutes, for which we must multiply 5 by 60 because each minute is made up of 60 seconds.
According to the above, the average speed of the athlete is 300m/min.
Learn more about speed in: https://brainly.com/question/7359669