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SSC SSC CHSL TIER-I Solved Paper Held on 07.01.2017

  • question_answer
    7 hours after a goods train passed a station, another train travelling at a speed of 54 km / hr. following that goods train passed through that station. If after passing the station the train overtakes the goods train in 11 hours, what is the speed of the goods train?

    A)  39.6 km/hr.

    B)  49.5 km/hr.

    C)  33 km/hr.

    D)  26.4 km/hr.

    Correct Answer: C

    Solution :

     Let the speed of goods train be\[x\] kmph.  \[\therefore \]Relative speed of train \[=(54-x)\,kmph.\] According to the question, Distance covered by goods train in 7 hours = Distance covered by train in 11 hours with relative speed. \[\Rightarrow \]\[7x=(54-x)\,11\] \[\Rightarrow \]\[7x+11x=54\times 11\] \[\Rightarrow \]\[18x=54\times 11\] \[\Rightarrow \]\[x=\frac{54\times 11}{18}=33\]kmph


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