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.Solution
Let the weight of the person who died be ‘x’ kg. So, x + (72 – 1.6) × 5 = 6 × 72 x + 70.4 × 5 = 432 x + 352 = 432 x = 432 – 352 x = 80 kg So, weight of the person who died was 80 kg.
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