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    Question

    The average weight of a group of five persons, A, B, C,

    D, and E is 70 kg. If another person K joins the group then the average weight of the group is decreased by 4 kg, then find the weight of K.
    A 45 kg Correct Answer Incorrect Answer
    B 47.2 kg Correct Answer Incorrect Answer
    C 46 kg Correct Answer Incorrect Answer
    D 48 kg Correct Answer Incorrect Answer

    Solution

    Total weight of A, B, C, D, and E together = 70 ├Ч 5 = 350 kg Weight of K = 66 ├Ч 6 тАУ 350 = 396 тАУ 350 = 46 kg

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