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Question
Two express trains of equal length are running on parallel lines in the same direction at 92 kmph and 72 kmph. If the faster express train passes the slower express train in 72 seconds, then what is the length of each express train?
Two express trains of equal length are running on parallel lines in the same direction at 92 kmph and 72 kmph. If the faster express train passes the slower express train in 72 seconds, then what is the length of each express train?
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Solution
The correct option is A 200 meter
Assume the length of each train = x
Total distance covered for overtaking the slower train = x+x = 2x
Relative speed = 92 - 72 = 20 kmph = 50/9 m/s
Time = 72 seconds
2x509 = 72 => x = 200 meter
200 meter
Assume the length of each train = x
Total distance covered for overtaking the slower train = x+x = 2x
Relative speed = 92 - 72 = 20 kmph = 50/9 m/s
Time = 72 seconds
2x509 = 72 => x = 200 meter
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