📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!
  • google app store apple app store
    • ✖

      Question

      A train 150 meters long crosses a man running in the

      same direction at a speed of 9 km/h in 15 seconds. It then crosses a platform in 25 seconds. Find the length of the platform and the speed of the train.
      A Platform: 175.5 m, Speed: 36 km/h Correct Answer Incorrect Answer
      B Platform: 250 m, Speed: 48 km/h Correct Answer Incorrect Answer
      C Platform: 162.5 m, Speed: 12.5 km/h Correct Answer Incorrect Answer
      D Platform: 300 m, Speed: 15.5 km/h Correct Answer Incorrect Answer

      Solution

      Speed of train relative to man = 150/15 = 10 m/s = 36 km/h.  Speed of train = 36 + 9 = 45 km/h.  Speed = 45 × 5/18 = 25/2 m/s.  Length of platform = (25 × 25/2) - 150 = 162.5 m.  Correct option: c

      Practice Next
      More Time and distance Questions
      ask-question