At a charity walk, 150 participants were adults. 1/3 of the children were boys. If 1/4 of the participants were girls, how many people were at the charity walk?
Can I do it? Of course, but I've to use algebra. I managed to get it in the first try, maybe in less than 3 mins? But you and I know that primary school maths do not involve a lot of algebra, if at all. And the way to solve such problems is to use the 'model' method and I know how I suck at this method of doing math. I tried for a good 30 minutes before giving up, attempting another question, hit an inspiration and went back to do it for another 15 minutes before I finally got the (Read more...)...
