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    Question

    The average of two consecutive even numbers is 81. If

    the smaller number is increased by 15% and the larger number is decreased by 15%, then find the difference between the numbers obtaine
    A 21.3 Correct Answer Incorrect Answer
    B 23.5 Correct Answer Incorrect Answer
    C 22.3 Correct Answer Incorrect Answer
    D 24 Correct Answer Incorrect Answer

    Solution

    Let the two consecutive even numbers be x and x + 2.

    ATQ,
    x + 1 = 81 => x = 80

    Required difference = 1.15 × 80 - 0.85 × 82 = 92 - 69.7 = 22.3

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