SOLUTION: A student in an algebra course has test scores of 71, 90, 79, and 83. What score on the next test will raise the student's average to 81?
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Question 901582: A student in an algebra course has test scores of 71, 90, 79, and 83. What score on the next test will raise the student's average to 81? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! A student in an algebra course has test scores of 71, 90, 79, and 83. What score on the next test will raise the student's average to 81?
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Assume 81 is the mean::
71 is below by 9
90 is above by 9
79 is below by 2
83 is above by 2
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The 1st four tests have mean = 81
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Ans:: The student needs an 81 on the next test.
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Cheers,
Stan H.
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