10th Class Mathematics Statistics Question Bank Statistics and Probability

  • question_answer
    The frequency distribution of monthly salaries of 500 workers in a factory is given below :
    Wages (Rs.) No. of workers
    0 - 49 90
    50 - 99 150
    100 - 149 100
    150 - 199 80
    200 - 249 70
    250or more 10
    It is proposed to give an in term relief per month at the rate of 10% of the lower boundary of each class interval or Rs. 10, whichever is more. Then the financial burden (in Rs.) on the part of the factory owner is

    A)  4100                     

    B)         4600

    C)  5500                     

    D)         6250  

    Correct Answer: D

    Solution :

    Wages (Rs.) Interim Relief Number  of Workers Amount (Rs.)
    0 - 49 10 90 900
    50 - 99 10 150 1500
    100 - 149 10 100 1000
    150 - 199 15 80 1200
    200 - 249 20 70 1400
    250 or more 25 10 250
    6250
    \[\therefore \]  Financial burden \[=Rs.\,6250\]


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