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Railways Sample Paper RRB (Assistant Loco Pilot & Technician) Sample Test Paper-3

  • question_answer
    In a class of 125 students \[20%\] of the students can dance. \[\frac{2}{5}\]th of the total number of students in the class can sing and \[\frac{2}{5}\]-th of the remaining number of students in the class are good at sports. What is the respective ratio of the number of students who can dance to the number of students who are good at sports?

    A)  5 : 4                            

    B)  4 : 3

    C)  5 : 3                

    D)       6 : 2

    Correct Answer: A

    Solution :

     No. of students who can dance \[=20%\] of 125 \[=\frac{20}{100}125=25\] Number of students who can sing \[=\frac{2}{5}\] of \[125=\frac{2}{5}\,\,\,125=50\] Remaining students \[=125-(25+50)\] \[=125-75=50\] Number of student who are good at sports. \[=\frac{2}{5}\] of  \[50=\frac{2}{5}\,\,50=20\] Ratio of the number of students who can dance to the number of students who are good at sports \[=\frac{25}{20}=\frac{5}{4}=5:4\]


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