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Since more observations are better than fewer here is my response.

1. ~2.5
2. ~6.5
3. 30
 
1. 3 hours - computer time (non work)
2. 7 hours - sleep time (also, non-work :D )
3. 45 years old

Of course, if you count work time, you'd have to add about 6 hours to that number.
 
1. ~4 Hours
2. ~5 Hours (I know, for my age I (acc. 2 doctor) need a lot more sleep)
3. 13
 
1. ~4 hours
2. ~8 hours
3. 20

That computer time is not including work (webdesign), and the sleep time is an average because the actual amount varies greatly from day to day.
 
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