In this question, we have to estimate the number of breaths taken by a human being during an average life time .
And average respiratory rate of about 10 breaths per minute . And average age of a human being is 70 years .
In 1 minute, number of breaths are 10 breaths .
So in 1 day,number of breaths are
![= 10*60*24 breaths = 14400 breaths](https://img.qammunity.org/2019/formulas/mathematics/college/t5a7d9hrynb8pleonr7rt0o14axjh056mv.png)
And for one year, it is
![=14400*365 =5256000 breaths](https://img.qammunity.org/2019/formulas/mathematics/college/tn36rr9kcdwsldeh849ca7kadksn7e9c8o.png)
And in 7 years, it is
![= 5256000*7 =36792000 breaths](https://img.qammunity.org/2019/formulas/mathematics/college/qq1oiro9gx2xc8k0pwxk7ori0fyvcxpef6.png)