Lesley is 45-years old, and has a resting heart rate of 76 beats per minute. When she participates in an aerobic dance class, she would like to train at 60% of her heart rate reserve, and, thus, should exercise at bpm. Round final answer to nearest whole number.

The correct answer to this open question is the following.

Although there are no options attached we can say that Lesley is 45-years old, and has a resting heart rate of 76 beats per minute. When she participates in an aerobic dance class, she would like to train at 60% of her heart rate reserve, and, thus, should exercise at 135 bpm.

That is why it is so important that you go check your health conditions before entering the gym or participate in any aerobic class such as Zumba, Aero Kickboxing, or ane fitness dance class. Then, it is part of the job of a fitness instructor to make sure you understand your capacities to perform any kind of exercise, being aerobic or anaerobic, in order to maintain proper safety procedures and guarantee that the exercise or the class is of total benefit for the participant.