Question

    The average weight of 50 workers in a factory is 70 kg. Two

    workers weighing 75 kg and 68 kg leave the job and are replaced by two others weighing 72 kg and 71 kg. Find the new average weight of the workers.
    A 25 kg Correct Answer Incorrect Answer
    B 70 kg Correct Answer Incorrect Answer
    C 45 kg Correct Answer Incorrect Answer
    D 85 kg Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ,

    Sum of the weight of the workers initially = 50 × 70 = 3500 kg

    Sum of weight after replacing two workers:

    = 3500 - 75 - 68 + 72 + 71 = 3500 kg

    So, required average = 3500 ÷ 50 = 70 kg

    Practice Next

    Relevant for Exams: