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SSC Sample Paper Mock Test-8 SSC CGL Tear-II Paper-1

  • question_answer
    Two trains A and B start running together from the same point in the same direction at 60 km/h 72 km/h, respectively. If the length of each train is 240 m, how long will it take for the train B to cross train A?   

    A)                              1 min 12 s

    B)  1 min 24 s      

    C)  2 min 24 s

    D)  None of these 

    Correct Answer: C

    Solution :

    Relative speed \[=(72-60)km/h=12km/h\] \[=\left( 12\times \frac{5}{18} \right)\text{m/s}\] \[=\frac{10}{3}\text{m/s}\] Total distance covered \[=(240+240)m=480m\] Required time \[=\left( 480\times \frac{3}{10} \right)\,\,s\] \[\text{= 144 s = 2 min 24 s}\text{.}\]


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