Question
A train 125 m long passes a man, running at 5 kmph in the same direction in which the train is going, in 10 seconds. The speed of the train is:
Answer: Option D
- Speed of the train relative to man = [125/10] m/sec = [25/2] m/sec.
= [25/2 x 18/5] km/hr = 45 km/hr.
Let the speed of the train be x kmph.
Then, relative speed = (x - 5) kmph.
∴ x - 5 = 45 or x = 50 kmph.
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- Speed of the train relative to man = [125/10] m/sec = [25/2] m/sec.
= [25/2 x 18/5] km/hr = 45 km/hr.
Let the speed of the train be x kmph.
Then, relative speed = (x - 5) kmph.
∴ x - 5 = 45 or x = 50 kmph.
Was this answer helpful ?
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