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SSC Sample Paper Mock Test-17 SSC CGL Tear-II Paper-1

  • question_answer
    The ratio of ages of two boys is 5 : 6. After 2 yr, the ratio will be 7 : 8. The ratio of their ages after 10 yr will be

    A) 15 : 16

    B)  17 : 18

    C)  11 : 12

    D)  22 : 24

    Correct Answer: A

    Solution :

    Suppose the ages of two boys are 5x and 6x, respectively, \[\therefore \] According to the question, \[\frac{5x+2}{6x+2}=\frac{7}{8}\] \[\Rightarrow \]   \[42x+14=40x+16\] \[\Rightarrow \]   \[2x=2\]\[\Rightarrow \]\[x=1\] Ratio of ages after 10yr \[=\frac{5\times 1+10}{6\times 1+10}=\frac{15}{16}=15:16\]


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