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    The mean of seven numbers is 96. If an eight number is added, the mean become 112. Find the eight no

    +1  Views: 702 Answers: 1 Posted: 11 years ago

    1 Answer

    Homework?


    The 1st seven numbers have a sum = 7*96 = 672 points
    ----
    Let the eighth number be "x":
    ----
    Equation:

     

    672+x = 8*112


    x = 8*112 -672
    x = 224

     



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