joanna tan a mile in physical education class. after resting for one hour, her heart rate was 60 beats per minute. if her herat rate was decreased by 2/5, what was her heart rate immediately after she ran the mile?
you would take her original heart rate and multiply that by 2/5 or by .4 which is 24, then take that and subtract it from her origina heart rate of 60 to get a final heart rate of 36