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1 September, 01:56

What must Sara get on her next test to average 80% if her previous test scores were 78, 88, 83, and 81?

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  1. 1 September, 02:14
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    Answer: 70

    Explain:

    80*5 = 400

    this tells us that the total scores before

    dividing must be 400

    400 - (78+88+83+81) = 70

    this tells us that we lack + 70

    in conclusion, to get an average of 80% on Sara's test scores; She must receive a grading of 70% in her next test.
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