John counted 20 heartbeats in ten seconds. What is his heart rate?
A.
120 bpm
B.
140 bpm
C.
160 bpm
D.
180 bpm

Answers

Answer 1

Answer: a. 120 bpm

Explanation:

Answer 2

John's heart rate is 120 bpm and the right option is A. 120 bpm.

What is heart rate?

Heart rate is the rate at which the heartbeat per minute.

To calculate the heart rate, we use the formula below.

Formula:

H' = Hb/t........... Equation 1

Where:

Hb= HeartbeatsH' = Heart ratet = Time

From the question,

Given:

H' = 20 heartbeatst = 10 seconds = 10/60 = 1/6 miniutes

Substitute these values into equation 1

Hb = 20/(1/6)Hb = (20×6)Hb = 120 bpm

Hence, John's heart rate is 120 bpm and the right option is A. 120 bpm.

Learn more about heart rate here: https://brainly.com/question/723406

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