A train travels 100 meters at 70 km hour. A man is running at 10 km per hour in the same direction. What time the train will pass the man?

6 seconds
62/3 seconds
7 second
8 second

Correct Answer: 6 seconds

Explanation:

Relative speed of the train
= (70 - 10)
= 60 km/hr
= (60 x 5/18)
= 50/3) m/sec.
∴ Time taken by the train to pass the man
= (100 x 3/50) = 6 sec.

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