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    Question

    The average weight of 7 men decreases by 3 kg when one

    of them weighing 150 kg is replaced by another person. Find the weight of the new person
    A 121 Correct Answer Incorrect Answer
    B 119 Correct Answer Incorrect Answer
    C 129 Correct Answer Incorrect Answer
    D 139 Correct Answer Incorrect Answer

    Solution

    Decrease average weight of 7 men = 3kg Total decrease weight of 7 men =3 ├Ч7 =21kg Find the weight of the new person = 150-21=129kg =129kg

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