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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 тАШxтАЩ kg. So, x + (68 тАУ 2) ├Ч 6 = 7 ├Ч 68 x + 66 ├Ч 6 = 476 x + 396 = 476 x = 476 тАУ 396 x = 80 kg So, weight of the person who died was 80 kg.

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