Given
Time taken by Erik to check his pulse = 8minutes
Count = 600 beats
To get his rate in beats per minute, you will use the formula:
Beat rate = Count (in beat)/Time taken (in minutes)
Sustitute the given paremeters into the formula given as shown:
Beat rate = 600beats/8minutes
Beat rate = 75beats per minutes
Hence his rate is 75 beats per minute.
form