I vaguely recall doing math on problem #2, and figuring "$20 in 60 days = $.33 dollar per day = not worth the time it takes to think about it." It looks like most people did some different math; what does that math look like?

On the anchoring question, I recommend putting a "click here to automatically generate a random number" button instead of a link to an external site. I'm pretty sure I read ahead and realized what the number would be used for, and I bet many others did, also.