Question

A student took her pulse three times while lying at rest and recorded the following values: 16 beats, 20 beats, and 18 beats in 20 seconds. the average resting heart rate for the student is

21 beats/minute
42 beats/minute
54 beats/minute
72 beats/minute
90 beats/minute

Answer 1

54 beats/minute

Step-by-step explanation:

First find the average heart rate from the data given

16+20+18=54

54/3=18

So her average heart rate for 20 seconds is 18

To find her heart rate in beats per minute multiply 18 times 3 because 20 seconds is a third of a minute

18x3=54

So, her average resting heart rate in beats/minute is 54