Multiple choice

A train of 300 -meter length crosses a platform of its double length in 30 second. Another train coming from opposite direction of length 350 meter with speed 90 km/hr cross first train in what second?

  1. 25

  2. 18

  3. 23

  4. 10

  5. None of these
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Train 1 length = 300m, platform = 600m (double length), total distance = 900m in 30s. Speed = 900/30 = 30 m/s = 108 km/hr. Train 2 (opposite direction) = 350m at 90 km/hr = 25 m/s. Combined speed = 108+90 = 198 km/hr = 55 m/s. Total distance = 300+350 = 650m. Time = 650/55 = 11.82 seconds. None of the options match.

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