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SSC Sample Paper Mock Test-9 SSC CGL Tear-II Paper-1

  • question_answer
    If A : B = 3 : 4, B : C = 5 : 7 and C : D = 8 : 9, then is equal to      

    A)                             3 : 7     

    B)  7 : 3   

    C)  21 : 10

    D)  10 : 21

    Correct Answer: D

    Solution :

    \[A:D=\frac{A}{D}=\frac{A}{B}\times \frac{B}{C}\times \frac{C}{D}=\frac{3}{4}\times \frac{5}{7}\times \frac{8}{9}=\frac{10}{21}\]                  \[=10:21\]


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