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Banking Quantitative Aptitude Sample Paper Quantitative Aptitude Sample Paper-1

  • question_answer
    The length of a rectangular floor is twice its breadth. If Rs. 256 is required to paint the floor at the rate of \[Rs.\,2\,per\,{{m}^{2}},\] then what would be the length of floor?

    A)  16 m

    B)  8 m  

    C)  12 m   

    D)  32 m

    Correct Answer: A

    Solution :

    [a] Rate of painting \[=Rs.\,2\,per\,{{m}^{2}}\] \[\therefore \]      Area of the rectangular floor \[=\frac{256}{2}=128{{m}^{2}}\] Let the breadth of floor be x m. Then, length \[=2x\,m\] \[\therefore \]      \[2x\times x=128\] \[\Rightarrow \] \[{{x}^{2}}=\frac{128}{2}=64\]\[\Rightarrow \]\[x=\sqrt{64}=8\]             Hence, length of floor \[=2x=2\times 8=16m\]


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