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SSC Sample Paper SSC CHSL (10+2) Sample Test Paper-12

  • question_answer
    The ratio of male to female students in a college for five years is plotted in the following line graph. If the number of female students doubled in 2009, by what percent did the number of male students increase in 2009?

    A)  \[~140%\] 

    B)  \[120%\]

    C)  \[80%\]                       

    D)  \[70%\]

    Correct Answer: A

    Solution :

     In 2008, ratio of male to female students \[=\frac{Male}{Female}=2.5\] Male \[=2.5\] female             ?...(i) If female students becomes double in 2009. Then \[=\frac{Male}{2\,\,Female}=3\] \[\Rightarrow \] Male = 6 female      ??.(ii) % increased in male student from 2008 to 2009             \[=\frac{6\,female-2.5\,female}{2.5\,female}\times 100\]                 \[=\frac{3.5\,female}{2.5\,female}\times 100=\frac{7}{5}\times 100\]                 \[\mathbf{=}\]                        


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