Estimate the number of times an average person's heart beats in a lifetime.Assume the average heart rate is 69 beats/min and a life span of 75 yr. A)3 × 10⁹ beats B)3 × 10⁸ beats C)3 × 10¹⁰ beats D)3 × 10⁷ beats

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Quizplus · Accepted Answer

To estimate the total number of heartbeats in a lifetime, multiply the average heart rate by the number of minutes in a year and then by the number of years in a lifetime: 69 beats/min × 60 min/hr × 24 hr/day × 365 days/yr × 75 yr ≈ 2.7 × 10^9 beats, which is closest to 3 × 10^9 beats.

Estimate the Number of Times an Average Person's Heart Beats