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SSC Sample Paper SSC (Group-C) Sample Test Paper-1

  • question_answer
    In a certain school, 10% of the students have less than 75% attendance and are not allowed to sit in the exam, but 20% of the students who have less than 75% attendance are allowed to sit in the exam. What percent of the students in the school have less than 75% attendance?

    A)  30%              

    B)  12.5%  

    C)  15%              

    D)  10.5%

    Correct Answer: B

    Solution :

     Let the number of students with less than 75% attendance = y Total students in school\[=x\] According to the question, \[\frac{x}{10}+\frac{y}{5}=y\] \[\Rightarrow \frac{x}{10}=y-\frac{y}{5}=\frac{4y}{5}\] \[\Rightarrow \,\,\frac{x}{2}=4y\Rightarrow \,\frac{y}{x}=\frac{1}{8}\] \[\Rightarrow \,\,\frac{y}{x}\times 100=\frac{100}{8}=12.5%\]


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