Multiple choice

If the length of the train is $700$ m and length of the platform is $500$ m, find the time taken by the train moving at $54$ km/h to cross-platform?

  1. $75$ sec
  2. $80$ sec
  3. $85$ sec
  4. $90$ sec
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Total distance = 700 + 500 = 1200 m. Speed = 54 km/h = 54 * (5/18) = 15 m/s. Time = 1200 / 15 = 80 seconds.

AI explanation

Use the formula for a train crossing a platform, where total distance equals the sum of the train length and platform length. The total distance is 700 m plus 500 m, giving 1200 m. Next, convert the speed of 54 km/h to metres per second by multiplying by 5/18, yielding 15 m/s. Divide the total distance of 1200 m by the speed of 15 m/s to get the time of 80 seconds.

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