Abhishek is standing on a railway bridge which is 90m long He finds that a train crosses the bridge ...........

Quantitative Aptitude (CDS) Problems on trains

Abhishek is standing on a railway bridge which is 90m long. He finds that a train crosses the bridge in 10 sec but himself in 4 sec. What is the length of the train and its speed?

50 Kmp/h

52kmp/h

55kmp/h

54kmp/h

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Master Problems on trains

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Explanation:

Let the length of the train be x meters

Then the train covers x meters in 4 second and (x+90) meters in 10 second

x/4 = (x+90)/10
10x= 4(x+90)
x= 60
Length of the train= 60 m

Speed of the train = (60/4)m/sec = m/sec = n(15x18/5)kmph = 54 kmph