Final answer:
To find the number of heart beats in 2.0 years for a person with an average heart rate of 72.5 beats per minute, calculate the beats per hour, multiply by the number of hours per day, and then by the number of days per year, finally multiplying by 2 for the two-year total, resulting in approximately 76.2 million heart beats.
Step-by-step explanation:
Calculating Heart Beats Over Two Years
To calculate how many heart beats a person with an average heart rate of 72.5 beats per minute will have in 2.0 years, we need to perform the following calculations:
- Multiply the average heart rate by the number of minutes in an hour (60) to find the number of beats per hour.
- Multiply this figure by the number of hours in a day (24) to find the number of beats per day.
- Multiply the number of beats per day by the number of days in a year (365), and then by 2 to find the number of beats in 2 years.
The calculations would be as follows:
- 72.5 beats/min × 60 min/hour = 4,350 beats/hour
- 4,350 beats/hour × 24 hours/day = 104,400 beats/day
- 104,400 beats/day × 365 days/year × 2 years = 76,206,000 beats in 2 years
Assuming the number of beats per minute is constant and the person lives through the entire period without any changes in the heart rate, a person would have approximately 76.2 million heart beats in a 2-year span.