Multiple choice

How long does a train, 700 m long moving at a speed of 126 kmph, take to pass a bridge 875 m long?

  1. 35 sec

  2. 42 sec

  3. 45 sec

  4. 55 sec

  5. 68 sec
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The total distance to cover is 700 m + 875 m = 1575 m. The speed is 126 km/h, which is 126 * (5/18) = 35 m/s. Time = Distance / Speed = 1575 / 35 = 45 seconds.

AI explanation

Using the formula for train speed, convert 126 kmph to meters per second by multiplying by 5/18, which gives 35 m/sec. The total distance covered is the sum of the train length and bridge length, 700 m plus 875 m, totaling 1575 m. Divide 1575 by 35 to get the time of 45 seconds. The time taken to pass the bridge is 45 sec.

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