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A troin 270m long is moving at a speed of 25kmph. It will cross a man coming from the opposite direction at a speed of 2kmph in :
  • a)
    24 sec
  • b)
    30 sec
  • c)
    36 sec
  • d)
    None of the above
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
A troin 270m long is moving at a speed of 25kmph. It will cross a man ...
Solution:
Here are the steps to solve the problem:

1. Convert the speed of the train and man in meters per second:

Speed of train = 25 kmph = (25 x 1000 m) / (60 x 60 s) = 6.94 m/s
Speed of man = 2 kmph = (2 x 1000 m) / (60 x 60 s) = 0.56 m/s

2. Determine the relative speed of the train and man:

Relative speed = Speed of train + Speed of man = 6.94 m/s + 0.56 m/s = 7.50 m/s

3. Calculate the time taken by the train to cross the man:

Distance to be covered = length of train + length of man = 270 m + 0 m = 270 m
Time taken = distance / relative speed = 270 m / 7.5 m/s = 36 s

Therefore, the correct answer is option C, 36 sec.
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Community Answer
A troin 270m long is moving at a speed of 25kmph. It will cross a man ...
Total speed=27km/hr
speed =27*5/18

time=270/27*5/18
270*18/27*5
=36sec
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A troin 270m long is moving at a speed of 25kmph. It will cross a man coming from the opposite direction at a speed of 2kmph in :a)24 secb)30 secc)36 secd)None of the aboveCorrect answer is option 'C'. Can you explain this answer?
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