A man is standing on a railway bridge which is 180 m long. He finds that a train crosses the bridge in 20 seconds and crosses the man in 8 seconds. Find the length of the train.
A
2402 meters
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B
60 meters
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C
120 meters
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D
70 meters
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Solution
The correct options are A2402 meters C 120 meters
Let length of train = x m
∴ Distance covered to cross the bridge
= (180 + x)m
Distance covered to cross the man = x m
Distancecovered180+xxTimetaken208
∵ speed is constant
∴ Distance covered is directly proportional to the time taken.