Question

A doctor observes a graph that shows the electrical activity (in volts) of the heart of a patient over a period of time (in seconds). Each spike corresponds to one heart beat. The doctor needs to calculate the heart rate of the patient in beats per minute.

What is the heart rate of this patient?
____ beats per minute

Answer 1

Answer: 60

Step-by-step explanation:

The graph shows that there is a heartbeat every second, due to the spikes being present at this rate.

1 beat : 1 second

60*(1 beat) : 60*(1 second)

60 beats : 60 seconds

60 beats : 1 minute

This indicates that the heart rate is 60 beats per minute (aka 60 bpm).