can someone please help me find this quote?

[Mike]

No: HPFGUIDX 181248

> Ivy wrote:
>
> I don't remember which book all I remember is that Harry, Ron and
> Hermione were looking at something and she got frustrated with them
> and asked them something like don't you guys ever read a book. I
> think  Ron or Harry replied with something like that's why we got
> you.

Mike:
I can't remember where the quote is, my inclination is it's in OotP 
or HBP. It was regarding reading "Hogwarts: A History". Ron or Harry 
proposes something that can't be done in Hogwarts. Hermione says 
something like: "It's in Hogwarts: A History. Aren't you ever going 
to read it?" To which Ron replies something like: "Why should we? We 
can just ask you."

Rereading this, I haven't been much help. I've looked for it, but I 
haven't found it yet. Sorry.