8th Class Mathematics Related to Competitive Exam Question Bank Arithmetic

  • question_answer
    If the cost of printing a book of 380 pages with 20 lines on each page and on an average 11 words in each line is Rs.19, then the cost of printing a book with 280 pages 22 lines on each page and 10 words in each line is

    A) Rs.14             

    B) Rs.16

    C) Rs.18                    

    D) Rs.20

    Correct Answer: A

    Solution :

    No. of Pages No. of lines No. of words cost
    380 20 11 19
    280 22 10 x
    all are in direct variation \[16+T=18\] \[{{T}_{1}}=3years\]     


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