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SSC Sample Paper Mock Test-18 SSC CGL Tear-II Paper-1

  • question_answer
    If a : b = 5 : 1 and c : d = 2a : 3b,then ac : bd is

    A) 20 : 38

    B)  50 : 147

    C)  10 : 21

    D)  50 : 151

    Correct Answer: B

    Solution :

    \[\frac{a}{b}=\frac{5}{7},\frac{c}{d}=\frac{2a}{3b}\] \[\Rightarrow \]   \[\frac{a}{b}\times \frac{c}{d}=\frac{5}{7}\times \frac{2a}{3b}\] \[\Rightarrow \]   \[\frac{ac}{bd}=\frac{10}{21}\times \frac{5}{7}=\frac{50}{147}\]


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