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  • The length of the bridge, which a train 130 metres long a...
Multiple choice general knowledge math & puzzles

The length of the bridge, which a train 130 metres long and travelling at 45 km/hr can cross in 30 seconds, is:

  1. 235

  2. 225

  3. 245

  4. 250

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Convert speed: 45 km/hr = 45 × 5/18 = 12.5 m/s. Distance covered in 30 seconds = 12.5 × 30 = 375m. This equals train length + bridge length, so bridge = 375 - 130 = 245m.

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