posted by Professor Mac .
A 45-yr-old woman with a resting heart rate of 65 beats per minute should keep her heart rate between 131 and 153 beats per minute while exercising. She checks her pulse for 10 sec while exercising. What should the number of beats
10 seconds = 1/6 of a minute.
So the number of heart beats in 10 seconds should be multiplied by the per-minute count by the same fraction.
For example, the lower limit is
131*(1/6) = 22 beats.
Can you complete the answer?