Evie has scores of 72, 78, 80 And 84 On four Science quizzes. What score must she get on the next quiz to have an average of at least 80?

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Evie has scores of 72, 78, 80 And 84 On four Science quizzes. What score must she get on the next quiz to have an average of at least 80?

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    2021-09-10T19:32:15+00:00

    x= the next quiz
    (72+78+80+84+x)/5=80
                               *5     *5
    72+78+80+84+x=400
    314+x=400
    -314     -314
    x=86
    Evie needs to get a score of 86 on her next science quiz.

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