Multiple choice

A train $140$ m long , passes a telegraph post in $14$ sec. Find time taken by it to pass a platform $160$ m long .

  1. $30$ sec
  2. $20$ sec
  3. $25$ sec
  4. $40$ sec
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A Correct answer
Explanation

The speed of the train is 140m / 14s = 10 m/s. To pass a 160m platform, the train must cover its own length plus the platform length, which is 140 + 160 = 300m. The time taken is 300m / 10 m/s = 30 seconds.

AI explanation

Using the formula speed equals distance divided by time, the speed of the train is 140 meters divided by 14 seconds, which gives 10 meters per second. To pass a 160 meter long platform, the total distance covered is 140 meters plus 160 meters, totaling 300 meters. The time required is 300 meters divided by 10 meters per second, which is 30 seconds.

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