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16 May, 08:11

Melissa has scored 83, 84, 93, 77, and 85 on her previous five tests. what score does she need on her next test so that her average (mean) is 83?

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  1. 16 May, 09:06
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    83 x 6 = 498

    all six of her scores need to equal at least 498 for an 83 average

    83 + 84 + 93 + 77 + 85 = 422

    498-422 = 76

    she needs a 76
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