Me and my sister were staring at the page for about 3 minutes (probably still scarred by level 21), went to the forums, picked up on a recurring theme regarding how hard (or not) the answer is to get, then another 3 minutes on I thought I might as well try THIS... and it was the right answer.
I, um, didn't see it right away. Even though I have a good monitor, it was not obvious. But once I saw it, I knew what to do right away. 12 minutes total.