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OpenStudy (anonymous):
A student has a mean score of 88 on five tests taken. What score must she obtain on her next test to have a mean (average) score of 80 on all six tests?
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OpenStudy (anonymous):
solve for x: 80 = (5*88 + x)/6
OpenStudy (mertsj):
\[\frac{88+88+88+88+88+x}{6}=80\]
OpenStudy (anonymous):
(88+88+88+88+88+40)/6=80
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