What will be the Correct Average? If

While finding the average of 10 given numbers, a student by mistake, wrote 64 in place of 46 and go this average 50. The correct average of the given  number is:

  1. 46
  2. 47.6
  3. 48.2
  4. None of these
Abdul Salam Newbie Asked on 7th August 2015 in Maths.
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1 Answer(s)

Answer :  (3) 48.2

Explanation: –
The average of 10 numbers = 50
Then, the sum of 10 numbers = 50 x 10
= 500

If,  A student by mistake, wrote 64 in place of 46.
Then, the correct  sum of 10 numbers  = 500 – (64 – 46)
= 500 – 18
= 482

Then, the correct average of 10 numbers = 482 / 10
= 48.2

Hence, the correct average of 10 number is 48.2.

 

Anurag Mishra Professor Answered on 7th August 2015.
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