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    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?
    A 36 kg Correct Answer Incorrect Answer
    B 35 kg Correct Answer Incorrect Answer
    C 32.5 kg Correct Answer Incorrect Answer
    D 36.5 kg Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    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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