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When taking your pulse, you count 18 beats in 15 seconds. Calculate the time period of your heart rate in seconds.

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You will have to multiply 18 which is the number of beats in 15 seconds by 4 to get 72 beats per minute. To measure the heart rate, you need to count the number of pulses in a 10 second time period using your stopwatch or clock.

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so what does that look like im confused
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18 divided by 15 gives you 1.2 beats per second.

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