Question

. a train of length 150 m takes 10 sec to pass over another train 100 m long coming from the opposite direction. if the speed of the train is 30 kmph. then the speed of the second train in kmph is

Answer 1

Answer:

60 kmph

Step-by-step explanation:

Correct answer is 60 kmph

Let the speed of train be x km \hr

Relative speed =(30+x)×155=18150+5xkm sec

∴18150+5x150+100=10

⇒18×250=10(150+5x)

⇒4500=1500+5x

⇒5x=4500−1500

⇒5x=3000

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⇒x=60km/hr