The average human breathes 12 times per minute. How many years would it take to breathe one billion times?

Question

I Can’t seem to get the right answer I get approximately 158 years.

Answer 1

12 / min

720 / hr

17,280 / day

6,307,200 / yr

 

Now divide 1,000,000,000 by 6,307,200 (darn close to your 158!)