Lessons

General Aptitude
1.1 Problems on Trains - General Questions

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Q.

A train 360 m long is running at a speed of 45 km/hr. In what time will it pass a bridge 140 m long?

View Answer

Correct choice: A

Explanation:

Formula for converting from km/hr to m/s:   X km/hr = X x 5 m/s.
18
Therefore, Speed = 45 x 5 m/sec = 25 m/sec.
18 2

Total distance to be covered = (360 + 140) m = 500 m.

Formula for finding Time = Distance
Speed
Required time = 500 x 2 sec = 40 sec.
25
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