Question

    The average height of 50 pupils in a class is 150 cm.

    Five of them whose average height is 146 cm leave the class, and five others whose average height is 156 cm, join. The new average height of the pupils of the class (in cm) is: _______.
    A 152 Correct Answer Incorrect Answer
    B 153 Correct Answer Incorrect Answer
    C 151 Correct Answer Incorrect Answer
    D 149 Correct Answer Incorrect Answer

    Solution

    The correct answer is C

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