The required time per beat in units of seconds if heart rate is 81.0 beats per minute is 0.74 seconds.
A rate is an exceptional proportion where the two terms are in various units. For instance, in the event that a 12-ounce container of corn costs 69¢, the rate is 69¢ for 12 ounces. This isn't a proportion of two like units, like shirts. This is a proportion of two not at all like units: pennies and ounces.
We have given heart rate is 81.0 beats per minute when resting.
To find ; time per beat in units of seconds.
So, 81 beats take 60 seconds
Then,
1 beat take = 60/81 = 0.74 seconds.
Thus, One beat takes 0.74 second.
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