Some time ago I read a lot of books. May be 5 in month (It is not includes technical books). But after finish University and wedding read 1 book in 2-3 month. It is so sadly.

It depends on how many pages it has.
100 pages? 3 days is enough.
500 pages? Maybe 1 book to 1 month.

 3-15
Depends on size, inrerest rate of the book and time free to read.
I'd leave the job and read all the time if i could.

 During summer vaccations I can usually read 10 to 12 literature books a month, but after classes start that number drops considerably. I have to read technical books and scientific articles for university, and that takes me longer to finish than literature.
Oh, how I miss it during school months!

i do reading every day... so... probably... 10, i guess