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.
Add Comment
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.
Add Comment

Your Answer

By posting your answer, you agree to the privacy policy and terms of service.