Barring deadlines, five hours per day, five days per week of actually writing. Hard to know how much I read. At least four hours per day, but I usually have a book with me wherever I go, so how it all adds up is just a guess.
Varies forms of research varies from week to week, and much of it is included in my reading, but usually a Saturday takes care of everything. Throw in another three or four hours of keeping up with e-mails, blogs, etc., and that's about it.
And it's hard to count to reading as part of my writing business. Reading is incredibly important for a writer, but were I not a writer, I'd be reading even more. I read because I love to read, not because I'm a writer.