Question 861150: Erika has received scores of 82,87,93,95,88, and 90 on math quizzes. What score must Erika get on her next quiz to have an average of 90?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Erika has received scores of 82,87,93,95,88, and 90 on math quizzes. What score must Erika get on her next quiz to have an average of 90?
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Let her next quiz score be "x"::
Solve for "x"::
[82 + 87 + 93 + 95 + 88 + 90 + x]/7 = 90
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(535+x) = 630
x = 95
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Cheers,
Stan H.
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