Multiple choice

Renu was sitting inside a train A, which was travelling at 50km/h, another train B whose length is three times the length of A crossed her in opposite direction in 15 second, if the speed of train B was 58 km/h , then the length of the train A is ( in m) is?

  1. 210

  2. 180

  3. 160

  4. 150
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Relative speed of trains A and B = 50 + 58 = 108 km/h = 30 m/s. Train B crosses Renu in 15 seconds, so length of train B = 30 × 15 = 450 m. Since train B is three times the length of train A, length of train A = 450/3 = 150 m. Option D is correct.

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