Question

A person's heartbeat is 73 beats per minute. If his heart beats 3.1e9 times in a lifetime, how long does the person live?

Answer 1

Answer: The person lived for 80.66 years.

Step-by-step explanation:

Heart beat of the person = 73 beat /min

Number of total heart beats =
`3.1* 10^(9)`

Life span of the person :
`\frac{\text{Total heart beats of the person}}{\text{Heart beat per minute}}=(3.1* 10^(9) beats)/(73 beat/min)`

1 year =525600 mins

Life span =
`0.0424* 10^(9) min=80.66 years`

The person lived for 80.66 years.