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    Question

    The average weight of a family of 6 members is 72 kg. If

    the oldest member dies, the average weight of the family decreases by 1.6 kg. Find the weight of person who died.
    A 68 kg Correct Answer Incorrect Answer
    B 75 kg Correct Answer Incorrect Answer
    C 80 kg Correct Answer Incorrect Answer
    D 82 kg Correct Answer Incorrect Answer

    Solution

    Let the weight of the person who died be тАШxтАЩ kg. So, x + (72 тАУ 1.6) ├Ч 5 = 6 ├Ч 72 x + 70.4 ├Ч 5 = 432 x + 352 = 432 x = 432 тАУ 352 x = 80 kg So, weight of the person who died was 80 kg.

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