Practice Test Discussion

Q)

To find the average of five numbers, a student write a number 54 inspite of 45. Thus, the average of these numbers is 52. The correct average of these numbers is?

    • Explanation

    Given,

    The average of five numbers is 52 

    Sum of observation= 52×5= 260

    Later, a student write a number 54 inspite of 45.

    (Correct number= Sum of observation+ correct number- incorrect number)

    The correct number= 260+45-54= 251

    ∴ Required average of these numbers is

    = 251÷5= 50.2

    Hence, Option B is correct.

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