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1 September, 01:20

The mean of 8 numbers is 12. Five of the numbers are 6, 8, 5, 10 and 28. The remaining 3 numbers are each equal to k. Find

(i) The sum of the 8 numbers

(ii) The value of k

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Answers (1)
  1. 1 September, 05:01
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    (i) 96

    (ii) k = 13

    Step-by-step explanation:

    (i)

    numbers averaged x Average of the numbers = Total of all of the numbers

    8 x 12 = 96

    (ii)

    6 + 8 + 5 + 10 + 28 + 3k = 8 x 12

    57 + 3k = 96

    3k = 39

    k = 13
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