Final answer:
Minnie swam 40% of Mickey's swimming distance.
Step-by-step explanation:
To find out how far Minnie swam as a percentage of Mickey's swimming distance, we first need to determine the distance Mickey swam. If Minnie swam 100% of the distance, then Mickey swam 250% of that distance. Therefore, Mickey swam 2.5 times the distance Minnie swam.
To calculate the percentage, we divide Minnie's distance by Mickey's distance and multiply by 100. Let's assume Minnie swam x distance. So, Mickey swam 2.5x distance. The percentage can be calculated as (x / 2.5x) * 100 = 40%. Therefore, Minnie swam 40% of Mickey's swimming distance.