What is the Average of New Set Number? If

The average of ten numbers is 7. If each number is multiplied by 12, then the average of the new set of numbers is:

  1. 7
  2. 19
  3. 82
  4. 84
Monis Rasool Professor Asked on 28th July 2015 in Maths.
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  • 1 Answer(s)

    Answer: (4) 84
    Explanation:-
    The average of ten number = 7
    Then, the sum of ten number =  10 x  7 = 0

    Each number is multiplied by 12,
    Then, the sum of 10 numbers =  70  x 12
    = 840
    The average of 10 numbers = 840/10
    = 84
    Hence, the answer is (4) 84.

    Anurag Mishra Professor Answered on 28th July 2015.
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