IBA Sukkur Mathematics MCQs STS SIBA Past Papers

The average of 10 numbers is calculated as 15. It is discovered later on that while calculating the average one number namely 36 was wrongly read as 26. The correct average is _____

  • 11
  • 13
  • 16
  • 19
  • c
  • Total Numbers=10
    Incorrect Average=15
    By mistake students read 26 instead of 36
    Sum of All Averages=10*15=150
    Correct Calculation=Incorrect Sum + Correct Sum-Incorrect Number
    Correct Calculation=150+36-26=160
    Correct Average=160/10=16

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