When a person runs a mile in exactly 4 minutes, their average speed can be calculated by dividing the total distance covered by the total time taken. In this case, as the distance covered is 1 mile and the time taken is 4 minutes, the average speed can be calculated as follows:

Average Speed = Total Distance / Total Time

Average Speed = 1 mile / 4 minutes

Average Speed = 0.25 miles per minute

Therefore, the average speed of the person running a mile in exactly 4 minutes is 0.25 miles per minute.

It is important to note that average speed is a measure of the rate at which an object or person moves over a certain distance in a given amount of time. It is a useful metric for evaluating performance and can be used to compare different runners or athletes.

If you would like to learn more about calculating average speed or how it is used in sports and fitness, you can visit websites such as Runner's World or Active.com for additional information.

Overall, understanding average speed can help individuals track their progress, set goals, and improve their performance in running or other physical activities. By knowing how to calculate average speed and apply it to their training regimen, athletes can work towards achieving their desired outcomes and reaching their full potential.

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