Question

Devon's target heart rate zone is 140bpm—177bpm. Julian's target heart rate zone is 148bpm—181bpm. They stop running and take their pulse, and both count the heart rate at 173bpm. If they decrease their heart rates by 20bpm, who will be in his THR zone?

Answer 1

Both of them should be in their THR zones.
173-20=153
153 is within 140-177 & 148-181