Final answer:
The rate of 20 small boxes on an EKG strip represents the heart rate in beats per minute.
Step-by-step explanation:
The rate of 20 small boxes on an EKG strip would equal the heart rate in beats per minute.
On an EKG strip, each small box represents a specific time interval. By counting the number of small boxes between two consecutive R waves (the tallest peak on the strip), you can determine the heart rate. The formula to calculate the heart rate using small boxes is:
Heart Rate (beats per minute) = 1500 / Number of small boxes between two R waves
For example, if there are 20 small boxes between two R waves, the heart rate would be 1500 / 20 = 75 beats per minute.