The time difference computed from the personal best given shows that Stan was 15 seconds faster.
From the information given, Stan had a personal best one mile run time of 6 minutes and 35 seconds. After his last run, his new personal best is 6 minutes and 20 seconds.
Therefore, the difference in time till be:
= 6.35 - 6.20
= 15 seconds.
Therefore, Stan was 15 seconds faster.
Learn more about time on:
https://brainly.com/question/4931057
