Question
The average weight of 4 persons is 56 kg. The heaviest
person’s weight is 30 kg more than the lightest person’s weight. If the average weight of the rest two persons is 55 kg, then find the weight of the heaviest person.Solution
The sum of the weight of 4 persons = 56 × 4 = 224 kg Let the weight of the lightest person = ‘x’ kg The weight of the heaviest person = (x + 30) kg The sum of the weight of the remaining two persons = 55 × 2 = 110 kg According to the question, x + x + 30 + 110 = 224 2x = 84 x = 42 The weight of the heaviest person = 42 + 30 = 72 kg
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