Practice Test Discussion

Q)

The average of 100 numbers is 50. It is found that, while calculating the average, two numbers namely 71 and 65 were wrongly read as 17 and 56. The correct average is?

    • Explanation

    Given,

    Average of 100 numbers is 50 = 100×50= 5000

    Later, while caluclating average  two numbers namely 71 and 65 were wrongly read as 17 and 56

    = 5000+71+65-17-56

    = 5063

    The correct average is= 5063100

    = 50.63

    Hence, Option A is correct.

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