Answer:
3/5
Explanation:
If it takes 15 minutes to complete one lap around the park, then the runner completes 1/15 of a lap in 1 minute.
To find out what fraction of a lap the runner completes in 9 minutes, we can multiply the fraction completed in 1 minute by the number of minutes elapsed:
Fraction completed in 9 minutes = (1/15) x 9 = 9/15 = 3/5
Therefore, the runner has completed 3/5 of a lap in 9 minutes