DSSSB · Mathematics

Two trains are running in the same direction on parallel tracks. Train P, which is 180 m long, is running at a speed of 90 km/h, while train Q, which is 120 m long, is running at a speed of 54 km/h. What will be the time taken by train P to completely cross train Q?

  1. 5 seconds
  2. 20 seconds
  3. 12 seconds
  4. 30 second
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