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SSC Sample Paper Mock Test-13 SSC CGL Tear-II Paper-1

  • question_answer
    Two numbers are in the ratio 3 : 5. If each number is increased by 10, the ratio becomes 5:7. The smaller number is

    A) 9

    B)  12     

    C)  15

    D)  25

    Correct Answer: C

    Solution :

    Let the numbers be 3x and 5x. \[\therefore \]      \[\frac{3x+10}{5x+10}=\frac{5}{7}\] \[\Rightarrow \]   \[25x+50=21x+70\] \[\Rightarrow \]   \[4x=20\] \[\Rightarrow \]   \[x=5\] \[\therefore \] Smaller number \[=3x=3\times 5=15\]


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