Is 20% the correct answer?

Megan's resting heart rate (RHR) is 90 beats per minute. She knows that a lower RHR is a sign of a healthier cardiovascular system. Her goal is to have a RHR of 72 beats per minute. Megan would need to improve her present resting heart rate by what percentage to achieve this goal?

10%

15%

20%

25%

Question

Graham Bentley

Mathematics

19 May, 21:35

Is 20% the correct answer?

Megan's resting heart rate (RHR) is 90 beats per minute. She knows that a lower RHR is a sign of a healthier cardiovascular system. Her goal is to have a RHR of 72 beats per minute. Megan would need to improve her present resting heart rate by what percentage to achieve this goal?

10%

15%

20%

25%

+5

Answers (1)

Know the Answer?

Kassandra Bernard · Answer 1

First, know that I am not giving the direct answer, just stating a fact. Multiply 72 by 1.10, 1.20, 1.25, and 1.15 until you find your answer. If you multiply 72 by 0.10, for example, then the number will lower.