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Railways Sample Paper RRBs Assistant Loco Pilot and Technician CBT STAGE-I Sample Paper-29

  • question_answer
    When 20% of a number is added to another number, the number increased by 50%. What is the ratio between the first and the second number?

    A)  3 : 2                

    B)  2 : 3

    C)  5 : 2                

    D)  2 : 5

    Correct Answer: C

    Solution :

    Let the numbers be x and y. Then, \[y+\frac{20x}{100}=\frac{150}{100}y\] \[\Rightarrow \]\[\frac{x}{5}=\left( \frac{3}{2}y-y \right)=\frac{y}{2}\Rightarrow 2x=5y\Rightarrow \frac{x}{y}=\frac{5}{2}\] \[\therefore \]      \[x:y=5:2\]


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