Multiple choice

How long does a train take to cross another train? I. A train 110 metres long travels at 60 km./hr. II. Another train is 180 metres long. III. Speed of another train is 54 km./hr.

  1. Only I and II

  2. Only I and III

  3. Only II and III

  4. All I, II and III

  5. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

To find crossing time, we need both train lengths and their speeds. The formula uses total distance (sum of lengths) divided by relative speed. Statement I gives length and speed of first train, II gives length of second train, and III gives speed of second train. All three are required to calculate the crossing time.

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