I'll assume that means total work time, and not including my play time.
I try not to work too much.
I'll have to guestimate, since lately I usually only build tgp galleries and a freesite daily, then do a little maintenance and maybe work on a new site.
TGP galleries: 50% (2-5 per day) Trying to maximize the partner accounts.
A freesite: 20% (1 per day) Takes more time than a gallery. Big LLs take 1/day.
Blogs: 7% (no schedule. once in a while I sit down and crank out a bunch of drafts I write myself or hand morph. Each blog randomly chooses one of the drafts every X days so I try to keep 10+ in the queue for each from different sponsors)
'Approving submissions' sites: 3% maybe 10min/day. I don't get too many.
Everything Else: 25% New scripts or new sites. I just had to convert a rateme style database into wordpress, hack a couple plugins to work together, and redesign rateftvgirls.com which took quite a few hours. Now on to the next site.... never a shortage on my todo list.
The great thing about this biz is the flex time, so you can work 2-12 hours a day if you want.