calculate the volume of air in liters that are inhaled and exhale in an 8 hour working day.

Question

Assume that each breath has a volume of about 0.5L, and that you are breathing 15 times a minute.

Answer 1

in min, volume is

15*0.5 =7.5 L

in an hour, Volume is

7.5*60=450

in 8 hours,

Volume=450*8=3600 L

Answer 2

15 breaths/min x 60 min/hr x 8 hr/day x 0.5 L/breath = 3600 liters

The question is a little vague because one isn't sure if a "breath" is one exhale + one inhale, or if that constitutes 2 breaths.  The above answer assumes it is the former (1 breath = 1 exhale + 1 inhale)