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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 train running at the speed of 60 km/hr crosses a pole in 9 seconds. What is the length of the train?

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

A 100 meter long train is running at the speed of 30 km/hr. Find the time taken by it to pass a man standing near the railway line ?

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

    Since the options are given in sec. we have to convert the speed of the train in terms of m/s.

    Speed of the train = 30 km/hr = 30 x (5/18) = 25/3 (m/s)

    So, the train passes 25 meters in 3 seconds (From the above equation).

    Therefore, the train will pass 100 meters in 4 x 3 = 12 sec

A train moves with a speed of 108 kmph. Its speed in metres per second is

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

    1 kmph = 1000 m / (60 x 60) s = 1000/3600 (m/s) = 5/18 (m/s)

    So, 108 kmph = 108 x (5/18) = 30 (m/s)

 If a man runs at 3 m/s. How many km does he run in 1hr 40min

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

    Speed of the man = 3 m/s

    After convering to kmph --> 3*(18/5) kmph = 54/5 kmph

    1hr 40min --> 1 (2/3) hr --> 5/3 hr

    Distance covered in 5/3 hrs = (54/5) * (5/3) = 18 km

In covering a distance of 30 km, Sachin takes 2 hours more than Rohit. If Sachin doubles his speed, then he would take 1 hour less than Rohit. Sachin speed is:

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

    Let Sachin’s speed be x km/hr.

    Then, 30/x - 30/2x = 3

    30/x --> Actual speed

    30/2x --> After doubling the speed

    3 --> he saves 3 hours (the 2 late hours + 1 advance hour)

    Solving the equation,

    6x = 30

    x = 5 km/hr.

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