1.

 A man sitting in a train which is traveling at 50 kmph observes that a goods train, traveling in opposite direction, takes 9 seconds to pass him. If the goods train is 150 m long, What is its speed?

A. 10 kmph
B. 11 kmph
C. 12 kmph
D. 13 kmph
Answer» B. 11 kmph


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