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  4. Quantitative Aptitude

Banking Quantitative Aptitude Sample Paper Quantitative Aptitude Sample Paper-28

  • question_answer
    When x is subtracted from the numbers 9, 15 and 27, the remainders are in continued proportion. What is the value of x?                                                                                                                                           [IBPS (PO/MT) 2012]

    A) 8                                 

    B) 6     

    C) 4                                 

    D) 5

    E) None of these

    Correct Answer: E

    Solution :

    \[\frac{9-x}{15-x}=\frac{15-x}{27-x}\]
    \[\Rightarrow \]\[243-9x-27x+{{x}^{2}}=225-15x-15x+{{x}^{2}}\]
    \[\Rightarrow \]\[6x=243-225=18\]\[\Rightarrow \]\[x=3\]


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