As my career required fast reading, & to disseminate pages, & pages of computerised written information, I'm a very fast reader, & can get through a book, if required, in a few hours', & dependent on number of pages!
Most of the time though, I prefer to read at my 'normal' pace, which is more enjoyable!
Vee - you're too kind. I have to say I just love reading so that is probably what makes me read so fast - too many books, so little time!
By the way I'd like to say thanks for the kind responses you have made to a couple of my answers recently - you must be a very empathetic person, and that's to be admired.
It depends on what I'm reading. If it's just a magazine, newspaper or cheap novel I'll read quickly, but if I'm studying I'll read much more slowly, and repeat key passages, just to be sure I fully understand what's been written.