I don't understand why the video just doesn't do 150/.25 to get the answer. It makes so much more sense. The way the video does it is SO CONFUSING. I don't even know where four comes from. http://www.khanacademy.org/math/arithmetic/percents/v/identifying-percent-amount-and-base
All you have to do is [number X]/[percent of Y as a decimal] -- that's the formula. I don't understand all this complexity that video is creating. I don't think this video can teach at all. I was SO CONFUSED, and other people in the talk were confused as well.
~ I don't think at all that this is a good way to solve this problem compared to the formula way I understand
~ Maybe it is a good way and I'm missing something
~ The goal is to understand why it's taught like this so I can find out if it's a good way or not
~ Which in turn leads me to learn something that corrects my assumption
~ I don't think that I'm wrong though
~ I found out I was right all along (for now) -- and voting down just because you don't like what I say doesn't change the truth, or the facts :)