Multiple Choice Questions on The cost of 9 books and 19 pens is Rs 1697 What is the cost of 27 books and 57 pens ........ for CDS Exam Preparation

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Multiple Choice Questions

The cost of 9 books and 19 pens is Rs 1697 What is the cost of 27 books and 57 pens ........

Quantitative Aptitude (CDS) Number System
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    The cost of 9 books and 19 pens is Rs 1697. What is the cost of 27 books and 57 pens?

     

    5190 Rs

    Incorrect Answer

    5091 Rs

    Correct Answer

    5910 Rs

    Incorrect Answer

    5100 Rs

    Incorrect Answer
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    Explanation:

    Let the cost of one book be  x and that of a pen be y
    According to the question
    9x + 19y = 1697
    3× (9x + 19y) = 3 × 1697
    27x + 57y = 5091 Rs

    By: bhavesh kumar singh
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