Question
Average weight of a team of 19 persons is 30 kg. When
one more person joins the team, the average weight of the team increases by 3 kg. Find the weight of new personSolution
Sum of weights of 19 persons = 30 × 20 = 570 kg Sum of weights of 20 persons = (30 + 3) × 20 = 660 kg Weight of new person = 660 – 570 = 90 kg
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