Question

A person’s heart is beating 87 times per minute. At this rate, about how many times does it beat in one hour?

a) 5,220 times
b) 8,700 times
c) 87 times
d) 870 times

Answer 1

To calculate the number of heartbeats in one hour at a rate of 87 beats per minute, multiply the beats per minute by 60, resulting in approximately 5,220 beats per hour.

Step-by-step explanation:

If a person's heart is beating 87 times per minute, to find out how many times it beats in one hour, you multiply the number of beats per minute by the number of minutes in an hour. Since there are 60 minutes in an hour, you would calculate 87 beats/min × 60 min/hr.

The calculation:
87 beats/min × 60 min/hr = 5,220 beats/hr.

Therefore, the heart beats approximately 5,220 times in one hour, which corresponds to option a) 5,220 times.