Answer: He took 8.57 minutes on average to complete one single lap.
Step-by-step explanation:
Given: Time taken to complete 5 laps = 42.85 minutes
Divide both sides by 5, we get
On average, Time taken to complete 1 lap = [tex]\dfrac{42.85}{5}[/tex] minutes
= 8.57 minutes
hence, he took 8.57 minutes on average to complete one single lap.