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where does the +20 come from? how did you get that

deanna019

by deanna019 at September 30, 2009

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The +20 came from the fact that the teacher multiplied 0.5 x 40 = 20.

mathguy mathguy September 30, 2009

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i agree with nycfunction.

JkSkCoo JkSkCoo August 08, 2010

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