Question
Average weight of a team of 18 persons is 40 kg. When
one more person joins the team, the average weight of the team increases by 4 kg. Find the weight of new personSolution
Sum of weights of 18 persons = 40 × 18 = 720 kg Sum of weights of 19 persons = (40 + 4) × 19 = 836 kg Weight of new person = 836 – 720 = 116 kg
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