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Banking Quantitative Aptitude Sample Paper Quantitative Aptitude Sample Paper-1

  • question_answer
    The population of a state in the year was 93771. If the rate of increase was 8% and 15% respectively from the previous 2 yr before 2013, what was the population in the year 2011?                              [NICL (AO) 2014]

    A) 55650

    B) 49550

    C) 75500

    D) 84500

    E) 65200

    Correct Answer: C

    Solution :

    [c] Let population in year 2011 = x
    \[\therefore \] Population in year 2012 \[=x+\frac{x\times 8}{100}=\frac{27x}{25}\]
    Now, population in year 2013
    \[=\,\,\frac{27x}{25}+\frac{27x}{25}\times \frac{15}{100}\,\,=\,\,\frac{621x}{500}\]
    According to the question, \[=\,\,\frac{621x}{500}\,\,=\,\,93771\]
    \[\Rightarrow \]   \[x=\frac{93771\times 500}{621}=151\times 500\]
    \[\Rightarrow \]   \[x=75500\]
               
     


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