You have an 85% average in math after 2 tests. If you score a 40% on this test, what will your new average be?

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- Feb 25th 2008, 07:32 PMDINOCALC09test average
You have an 85% average in math after 2 tests. If you score a 40% on this test, what will your new average be?

- Feb 25th 2008, 07:40 PMJhevon
lets count by points. so 85% means you average 85 points.

Now $\displaystyle \mbox{Average Score } = \frac {\mbox{Sum of scores}}{\mbox{Number of scores}}$

So, your old average was $\displaystyle \frac {170}2$ %

your new average is $\displaystyle \frac {170 + 40}3$ % - Feb 25th 2008, 07:41 PMmr fantastic