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Mathematics 21 Online
OpenStudy (anonymous):

How did they get the total? http://i44.tinypic.com/25g6qsw.png

OpenStudy (anonymous):

by row: they took the sum of the first column multiplied by fraction

OpenStudy (anonymous):

Thank you!

OpenStudy (anonymous):

row c - is off on the by line calculation.....

OpenStudy (anonymous):

oh - total at the bottom is sum of far right columns

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