Algebra

The average of two test scores is 79. If one test score is eleven less than the other, what are the two test scores?

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  1. a=first score

    b=second score

    b=a-11

    (a+b)/2=79

    a+a-11=2*79

    2a-11=158

    2a=158+11

    2a=169 Divide with 2

    a=169/2= 84.5

    b=a-11

    b=84.5-11

    b=73.5

    (a+b)/2= (84.5+73.5)/2=158/2=79

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