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    Question

    The average weight of a family of 7 members is 68 kg. If

    the eldest member dies, the average weight of the family decreases by 2 kg. Find the weight of the person who died.
    A 70 kg Correct Answer Incorrect Answer
    B 75 kg Correct Answer Incorrect Answer
    C 80 kg Correct Answer Incorrect Answer
    D 90 kg Correct Answer Incorrect Answer

    Solution

    Let the weight of the person who died be ‘x’ kg. So, x + (68 – 2) × 6 = 7 × 68 x + 66 × 6 = 476 x + 396 = 476 x = 476 – 396 x = 80 kg So, weight of the person who died was 80 kg.

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