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Railways Sample Paper RRBs Assistant Loco Pilot and Technician CBT STAGE-I Sample Paper-3

  • question_answer
    In a school 70% of the students are girls. The number of boys are 510. 
    Then, the total number of students in the school is
     

    A)                 850                 

    B)         1700       

    C)  1830   

    D)  1900       

    Correct Answer: B

    Solution :

    Let, the total number of students = x. \[\therefore \] 30% Students = 510 \[\Rightarrow \]   \[\frac{30\times x}{100}=510\] \[\Rightarrow \] \[x=\frac{510\times 100}{30}=1700\]


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