What's interesting about that problem is that (for me, at least) knowing that that is enough information to solve it makes solving it a lot easier. If I was jus

What's interesting about that problem is that (for me, at least) knowing that that is enough information to solve it makes solving it a lot easier. If I was just told to make as much headway as I could, I'd get stuck on some tricky geometry, but once you're told that the answer is a single number, not in terms of any variables, the method of solution became clear.