:O,
Tuesday, October 13, 2009 @ 10:38 PM
Haha, came across this article on the recent PSLE Math paper, which many parents claimed to be rather difficult! They mentioned 1 of the question, which I think is absolutely crazy!
"Jim bought some chocolates and gave half of it to Ken. Ken bought some sweets and gave half of it to Jim. Jim ate 12 sweets and Ken ate 18 chocolates. The ratio of Jim’s sweets to chocolates became 1:7 and the ratio of Ken’s sweets to chocolates became 1:4. How many sweets did Ken buy?"Haha, I've always hated ratio questions and what sweets & chocs super confusing luh :O I spent like dunno how long on the question, re-reading and re-reading, drawing models, comparing ratios, basically just short of using the dumb trial & error method lol. Finally, I solved the question using simulateous equation and my trustworthy calculator! Fyi, we only learn simultaneous equations in like sec 1 or 2 leh. LOL in the eyes of those poor PSLE students, 'x' and 'y' aren't algebraic terms representing unknowns, they are just mere alphabets. Speaking if algebra, who on earth came up with that?!