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Banking Quantitative Aptitude Sample Paper Quantitative Aptitude Sample Paper-20

  • question_answer
    Ten chairs and six tables together cost Rs. 6200, three chairs and two tables together cost Rs. 1900. The cost of 4 chairs and 5 tables is                                                                                                                                          [CDS 2013]

    A) Rs. 3000           

    B) Rs. 3300  

    C) Rs. 3500                       

    D) Rs. 3800

    Correct Answer: A

    Solution :

        
    Let cost of one chair be Rs. x and cost of one table be Rs. y.
    Then,    \[10x+6y=6200\]
    and       \[3x+2y=1900\]
    Solving for x and y, we get
                \[x=Rs.\,500,\]\[y=Rs.\,200\]
    Cost of 4 chairs and 5 tables
                \[=4\times 500+5\times 200\]             \[=2000+1000=Rs.\,3000\]


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