Question
The average weight of 16 people increases by 500 grams
when two individuals, each with an average weight of 40 kg, are added. What is the new average weight of all the people?Solution
Let the average weight of 16 people be 'A' kg. ATQ, (16A + 40 X 2) ÷ 18 = (A + 0.5) Or, 16A + 80 = 18A + 9 Or, 2A = 71 Or, 'A' = 35.5 Therefore, required average = 35.5 + 0.5 = 36 kg
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