A person is exercising hard outside when the temperature is

A person is exercising hard outside when the temperature is 10°C, and the humidity is at 50%. She breathes 15 breaths each minute, taking in 700 ml air with each breath.  Her nose is so cold, that the exhaled breath is only at 30°C. At what rate is she losing water through respiration (on a per-hour basis)?

Solution

volume of air inhales=volume of air exhaled=700ml

number of breath per minute=12

rate=volume/number of breaths per minute=700/12=58.33 ml