Find out the average of 10 numbers? If

The average of 12 numbers is 15 and the average of the first two is 14. What is the average of the rest?

  1. 14
  2. /71/5
  3. 15
  4. 76/5
Monis Rasool Professor Asked on 21st November 2015 in Maths.
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  • 1 Answer(s)

    Answer: (4) 76/5

    Explanation:-
    The average of 12 numbers = 15 
    Then, the sum of 12 numbers = 12 x 15 
     = 180

    The average of first two numbers = 14
    Then,  the sum of two numbers = 2 x 14
     = 28

    The sum of rest 10 numbers = 180 – 28 
     = 152
    Then, the average of rest numbers = 152/10
     = 76/5

    Hence, the answer is (4) 76/5.

    Anurag Mishra Professor Answered on 21st November 2015.
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