The Average of 7, 11, 15, x, 14, 21, 25, is 15, Then the Value of x is:

  1. 12
  2. 13.3
  3. 3
  4. 14.5
Monis Rasool Professor Asked on 28th August 2015 in Maths.
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  • 1 Answer(s)

    Answer: (1) 12
    Explanation:-
    Formula-
    Average = the sum of the observation/ the number of the observation

    Then, the average = (7 + 11 + 15 + x + 14 + 21 + 25)/7 = 15
    (93 + x)/7 = 15
    93 + x = 15 x 7
    93 + x = 105
    x = 105 – 93
    x = 12
    the, the value of x is 12.

    Hence, the answer is (1) 12.

    Anurag Mishra Professor Answered on 28th August 2015.
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