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    Question

    The average of four consecutive numbers is 48. What is

    the largest number in this group?
    A 25.5 Correct Answer Incorrect Answer
    B 49.5 Correct Answer Incorrect Answer
    C 55.4 Correct Answer Incorrect Answer
    D 74.2 Correct Answer Incorrect Answer

    Solution

    ATQ,

    Let the numbers be: x, x + 1, x + 2, and x + 3 ATQ: x + (x + 1) + (x + 2) + (x + 3) = 48 × 4 ⇒ 4x + 6 = 192 ⇒ 4x = 186 ⇒ x = 186 ÷ 4 = 46.5 Therefore, the largest number = x + 3 = 46.5 + 3 = 49.5

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