Justin starts going to a new fitness class his smart watch tracks a total of 72 active minutes in the week if he attends the class three times what is the unit rate of active minute per class?

To find the unit rate of active minutes per class, we need to divide the total number of active minutes by the number of classes.

Total active minutes: 72
Number of classes: 3

Unit rate = Total active minutes / Number of classes
Unit rate = 72 minutes / 3 classes
Unit rate = 24 minutes per class

Therefore, the unit rate of active minutes per class is 24 minutes.