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SSC Quantitative Aptitude Speed, Time and Distance Question Bank Speed Time and Distance (II)

  • question_answer
    A is twice as fast as B and B is thrice as fast as C. The journey covered by C in 42 min will be covered by A in

    A) 7 min

    B) 14 min

    C) 28 min

    D) 63 min

    Correct Answer: A

    Solution :

    [a] Let Cs speed be x m/min. Then,    B's speed = 3x m/min and A's speed = 6x m/min. Ratio of speeds of A and C = Ratio of times taken by C and A \[6x:x=42:y\min \] \[\Rightarrow \]   \[\frac{6x}{x}=\frac{42}{y}\] \[\Rightarrow \]   \[y=\frac{42}{6}\,\min =7\min \]


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