Question

    The average marks of Karan in 5 different papers was

    calculated as 73. But it was later found that his marks in two subjects were wrongly entered as 80 and 68 instead of 85 and 79. What is his accurate average?
    A 28.5 Correct Answer Incorrect Answer
    B 33.5 Correct Answer Incorrect Answer
    C 66.5 Correct Answer Incorrect Answer
    D 76.2 Correct Answer Incorrect Answer

    Solution

    ATQ,

    Wrong total = 73 × 5 = 365

    Correct total = 365 - (80 + 68) + (85 + 79) = 381

    Correct average = 381 ÷ 5 = 76.2

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