Multiple choice

The following questions are accompanied by three statements A, B and C. You have to determine which statement is/are sufficient. At what time will the train reach from city 'X' to city 'Y'? A. The train crosses another train of equal length of 200 meters and running in opposite direction in 30 seconds. B. The train leaves city 'Y' at 9.00 am for city 'X' situated at a distance of 780 kms. C. 250 meter long train crosses a signal pole in 10 seconds.

  1. Only A

  2. Only B

  3. Only C

  4. Only B and C

  5. All A, B, C are required to answer the question
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

From C: Train speed = 250 meters / 10 seconds = 25 m/s = 90 km/hr. From B: Distance = 780 km, departure = 9:00 am. Time = 780/90 = 8.67 hours = 8 hours 40 minutes. Arrival time can be calculated. Statement A about crossing another train is irrelevant. So only B and C are needed.

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