Question

If Grandpa Jack's average heart rate is 76 beats per minute, how many times will his heart beat in 80 years (accounting for leap years)?

a) 1,226,080,000 beats
b) 1,226,080,760 beats
c) 1,261,827,600 beats
d) 1,618,800,000 beats

Answer 1

To find the number of heartbeats in 80 years, multiply the number of minutes in a year by 80 and then multiply that by the average heart rate of 76 beats per minute. Total number of heartbeats: 42,076,800 x 76 = 3,199,228,800 beats

Step-by-step explanation:

To find the number of heartbeats in 80 years, we first find the number of minutes in 80 years by multiplying the number of minutes in a year by 80. There are 60 minutes in an hour and 24 hours in a day, so there are 60 x 24 = 1440 minutes in a day. Multiply that by 365.25 (accounting for leap years) to find the number of minutes in a year. Then multiply the number of minutes in a year by 80 to get the total number of minutes in 80 years. Finally, multiply the total number of minutes by the average heart rate of 76 beats per minute to find the total number of heartbeats.

Calculation:

Number of minutes in a year: 1440 x 365.25 = 525,960 minutes

Total number of minutes in 80 years: 525,960 x 80 = 42,076,800 minutes

Total number of heartbeats: 42,076,800 x 76 = 3,199,228,800 beats