Monday, August 23, 2010

Quick update...

Hi all,

  Just a quick reminder on what I have to revise for tomorrow's math preliminary exam paper. 

1.One variable unchanged
2.Two variables unchanged (Cross method)
3.Rid one variable 
4.Total Unchanged
5.Cost vs Quantity
6.Set theory

Yeah, that's about all the math concepts that I've learned for Ratio and Percentage.

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