Another childhood 100 pages per hour-er here. That meant that the 200 or so pages in a Roald Dahl book could easily be read between 6-8am then get ready for a 9am ballet lesson.
As a teenager I read 1984 in one evening without putting it down. It wasn't an enjoyable book (too grim), but it was compulsive, and it did not leave my hand until it was complete. I remember reading it as I walked down the stairs (my peripheral vision is good!) to eat, and eating with it in my hand.
When I was 12, my school did Readathon- I raised quite a lot as I was sponsored per book, and did bolster the ammount with some short books of about 50 pages. There were plenty of longer books mixed in.
I got into the Harry Potters when the film came out and the first four books were published- they were read in a normal weekend. I was slowed down by waiting for DH to finish one book before I could start. When the next 3 were published, DH tried to ration me, but realised it was easier to just write a day off and let me get on with it. We ordered two copies, and sat in bed much of the day ploughing through them.
It's a shame we went travelling shortly before Kindles came out- it would have been easier than lugging the Lord of the Rings around China! I finished before we had chance to get more books so I ended up having to plough through the 100 page appendices about Hobbit geneology (dull!)
Alas young babies/ children and baby brain have temporarily reduced my opportunities and capacity to read for a while.
Yes, I think it is possible for a 10 year old to read 10 books in a weekend and have a life, but I suspect some of them might be short and easy readers mixed in. That's fine, reading is about enjoyment, not intellectual bragging.