What percent of a person life do they speed asleep and how long total would a 100 year old have slept?

Question

What percent of a person life do they speed asleep and how long total would a 100 year old have slept?

Answer 1

1/3 of their life.  (except for teens, ha ha)

Answer 2

Individual sleep requirements vary; however, most people spend approximately 1/3 of their life sleeping.  Thus, a 100 year old person would have spent 33 years asleep!  

Answer 3

If a person slept 8 hours a day, a 100 year old would sleep for 291,200 hours in their lifetime. Which is one third of the person's life.