Multiple Choice Questions on A train B speeding with 120 km h crosses another train C running in the same direction in 2 minutes ........... for CDS Exam Preparation

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Multiple Choice Questions

A train B speeding with 120 km h crosses another train C running in the same direction in 2 minutes ...........

Quantitative Aptitude (CDS) Problems on trains
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    A train B speeding with 120 km/h crosses another train C, running in the same direction in 2 minutes.  If the length of the train B and C be 100m and 200m respectively, what is the speed of train C?

     

    111km/hr
     

    Correct Answer

    110km/hr
     

    Incorrect Answer

    100km/hr
     

    Incorrect Answer

    120km/hr

    Incorrect Answer
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    Explanation:

    total length is 100+200 =300m=300/1000 km
    time=distance/time
    time t=2 minutes
    =1/30 hour
    t=(300/1000)/(120-C)
    1/30=(3/10)/(120-C)
    120-C=9
    C=111 km/h

    By: bhavesh kumar singh
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