Question

David’s pulse is 80 beats per minute what is the frequency of his pulse in beats per second and how long does it take between heart beats

Answer 1

1.333 beats/s

It takes 0,755 s per beat

Step-by-step explanation:

If we want to convert this frequency from beats per minute to beats per second, we have to do the following:

`80(beats)/(min) (1min)/(60s)=1.333(beats)/(s)`

This means that in 1 second David has 1.333 heart beats.

Now, if we want to know how long does it take between heart beats, we can use the mathematical Rule of Three:

1.333 beats ---- 1s

1 beat ------ ?

`?=((1 beat)(1s))/(1.333 beats)`

`?=0.75 s` This means there are 0.75 s between heart beats