Two trains of length 220 meters and 240 meters are moving in the same direction on parallel tracks at speed of 92 km/hr and 74 km/hr. At what time the first train will cross the second train?
Question
Two trains of length 220 meters and 240 meters are moving in the same direction on parallel tracks at speed of 92 km/hr and 74 km/hr. At what time the first train will cross the second train?
Time =Distance/Speed
In this problem, both the trains are in motion so we will find the relative speed of the train. They are moving in the same direction, so the relative speed is equal to the difference of their individual speeds.
Relative Speed: (92-74) = 18 km/hr
Relative Speed in m/s: 18*5/18 = 5 m/s
Distance covered is equal to the sum of the length of trains: 220+240 = 460 meters
Time =460/ 5 = 92 seconds
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Aptitude