Weasley's ages

[Molly Rahe]

No: HPFGUIDX 92030

O.K. I am realy at a loss here. It seems our beloved author has made a
small error, or someone please point me in the right directing. I am
getting all my info from interviews found on The Lexicon and the books

According to JKR herself, Bill is at least 28 in book 5. Charlie is at
least 14 years older than Harry, because it had been 7 years since
Charlie has been in school by the time Harry arrived (the not winning
a quidditch cup since Charlie thing). In this new interview, she
states that there is two years between the boys. So according to both
of her interviews;
When Harry is 11, Charlie is least 25.
Bill would be 27, as he has to be two years older than Charlie
When oOtP comes about, Charlie is about 29. Bill is 31.
However, in this interview, she has Percy being only two years younger
than Charlie, making him 27, which he is most definatly not.
Oh! Thats it, this is way to contradicting for me! I need help!

(Its only peoples ages Molly, get a grip!)