Question

    There are 48 students in a class. Their average weight

    is 48 kg. When one student leaves the class, the average weight reduces by 200 grams. What is the weight of the student who left the class?
    A 57.4 kg Correct Answer Incorrect Answer
    B 54.7 kg Correct Answer Incorrect Answer
    C 45.7 kg Correct Answer Incorrect Answer
    D 47.5 kg Correct Answer Incorrect Answer

    Solution

    New average = 48-0.2= 47.8 kg Weight of boy left = New average + Number of total boys x Average reduced = 47.8 + 48 × 0.2 = 47.8 + 9.6 = 57.4 kg

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