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9th Class Mathematics Statistics Question Bank Statistics

  • question_answer
    The mean wage of 150 labourers working in a factory running three shifts with 60, 40 and 50 labourers is Rs. 114. The mean wage of 60 labourers working in the first shift is Rs. 121.50 and that of 40 labourers working the second shift is Rs. 107.75. Find the mean wage of those who are working in the third shift.

    A) Rs. 110                       

    B) Rs. 100           

    C)   Rs. 120           

    D)   Rs. 115.75      

    Correct Answer: A

    Solution :

    Not Available


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