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17 July, 08:22

Jon's test grades are 67, 75, 73 and 69. What does he need to make on his next test to have a 73 average?

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  1. 17 July, 10:40
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    It's 81.

    simple calculate it by:

    (67+75+73+69+x) / 5=73

    then 73*5 - (67+75+73+69) = x

    where x here is the grade needed to reach an av. of 73. 5 is the number of tests.
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