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

Question

Quizplus · Accepted Answer

To estimate the total number of heartbeats, multiply the heart rate per minute by the number of minutes in a year and then by the number of years: $69 \text{ beats/min} \times 60 \text{ min/hr} \times 24 \text{ hr/day} \times 365 \text{ days/year} \times 75 \text{ years} \approx 3 \times 10^9$ beats.

Estimate the Number of Times an Average Person's Heart Beats 69 beats /min69 \text { beats } / \mathrm { min }69 beats /min

Estimate the Number of Times an Average Person's Heart Beats $69 \text { beats } / \mathrm { min }$