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28 July, 06:44

80 95 90 80 100 _ what goes on the blank to get a mean of 90

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Answers (2)
  1. 28 July, 07:59
    0
    95.

    Step-by-step explanation:

    The are a total of 6 numbers so to make the mean 90 the total must be 6*90 = 540.

    So the number in the blank is 540 - (80 + 95+90+80+100)

    = 540 - 445

    = 95.
  2. 28 July, 09:43
    0
    95

    Step-by-step explanation:

    (80 + 95 + 90 + 80 + 100 + x) / 6 = 90

    x = 95
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