Justin starts going to a fitness class. His smart watch tracks a total of 72 active minutes in a week. If he attended the class three times. What is the active minutes per class?
To find the active minutes per class, we divide the total active minutes in a week by the number of times Justin attended the class.
Therefore, the active minutes per class is 72/3 = <<72/3=24>>24 active minutes. Answer: \boxed{24}.