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Aptitude - Aptitude- Speed

Read many objective multiple choice questions of Aptitude - Aptitude- Speed in English. Practise online thousands of questions related to Aptitude - Aptitude- Speed. You can check online answer and try mock tests for Aptitude - Aptitude- Speed Questions provided in English.

A 270 metres long train running at the speed of 120 kmph crosses another train running in opposite direction at the speed of 80 kmph in 9 seconds. What is the length of the other train?

  • a
  • b
  • c
  • d
  • OOPS, your answer is incorrect

    For opposite directions, Relative speed = (120 + 80) km/hr = [200 * (5/18)] m/sec = [500/9] m/sec.

    Let the length of the other train be x metres.

    Then, (x + 270) / 9 = 500/9
    x + 270 = 500
    x = 230.

A train 125 m long passes a man, running at 5 kmph in the same direction in which the train is going, in 10 seconds. The speed of the train is ?

  • a
  • b
  • c
  • d
  • OOPS, your answer is incorrect

    From the problem, Speed of the train relative to man = [125/10] m/sec = [25/2] m/sec. = [(25/2) * (18/5)] km/hr = 45 km/hr.

    Let the speed of the train be x kmph. Then, relative speed = (x - 5) kmph.
    ஃx - 5 = 45 or x = 50 kmph.

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