In Memories of.... » Mathematics http://www.jingsixuan.com In Memories of my old blog Sun, 21 Mar 2010 05:52:36 +0000 http://wordpress.org/?v=2.8.5 en hourly 1 PSLE Mathematics http://www.jingsixuan.com/2009/10/11/psle-mathematics/ http://www.jingsixuan.com/2009/10/11/psle-mathematics/#comments Sun, 11 Oct 2009 05:31:58 +0000 Kailing http://www.jingsixuan.com/?p=223 PSLE Mathematics paper often causes uproar and one question that appeared in channelnewsasia.com as extremely difficult was this:

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?

My solution? There you go:


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