Final answer:
The time per beat when the heart rate is 150 beats per minute is 0.4 seconds, calculated by dividing 60 seconds by 150 beats.
Step-by-step explanation:
The method of calculating the heart rate is not shown in the question; however, if someone's heart rate is 150 beats per minute during strenuous exercise, the time per beat in units of seconds can be calculated using straightforward arithmetic. To determine the time per beat, you divide the number of seconds in a minute by the heart rate. There are 60 seconds in one minute, so you would calculate 60 seconds ÷ 150 beats per minute.
This gives you 0.4 seconds per beat, demonstrating that during vigorous exercise, each heart beat occurs in less than half a second. This method involves counting the number of beats felt or heard for one full minute. To calculate time per beat in seconds, we divide 60 seconds by the heart rate in beats per minute.