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    Question

    The average weight of 5 students in a class is 25.8kg.

    When a new student joins them, the average weight increases by 3.9kg. Then what will be the approximate weight of the new student?
    A 75 kg Correct Answer Incorrect Answer
    B 58kg Correct Answer Incorrect Answer
    C 65 kg Correct Answer Incorrect Answer
    D 49 kg Correct Answer Incorrect Answer
    E none of these Correct Answer Incorrect Answer

    Solution

    ATQ, we can say that   Weight of new student =   6(25.8 + 3.9) - 5 x 25.8   6 x 29.7 - 129   178.2 - 129   Hence, the required weight for new student is 49.2kg or 49 kg ans.

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