Multiple choice

Passage

In each of the following questions, read the given statement and compare the Quantity I and Quantity II on its basis. (only quantity is to be considered)

Quantity I : A 300 m long train crosses a 150 m long tunnel at the speed of 108 km/h, then what is the time taken by the train to cross the tunnel? Quantity II : Train H of length 360 m crosses a pole in 18 seconds. What is the time taken by train P of length 340 m coming from the opposite direction running at the speed of 30m/s to cross the running train H ?

  1. Quantity I > Quantity II

  2. Quantity I ≥ Quantity II

  3. Quantity I < Quantity II

  4. Quantity II ≥ Quantity I

  5. Quantity I = Quantity II or relation can't be established
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A Correct answer
Explanation

Quantity I: Total distance = 300 + 150 = 450 m. Speed = 108 km/h = 30 m/s. Time = 450/30 = 15 seconds. Quantity II: Train H speed = 360/18 = 20 m/s. Combined relative speed = 20 + 30 = 50 m/s. Total distance = 360 + 340 = 700 m. Time = 700/50 = 14 seconds. Since 15 > 14, Quantity I > Quantity II.

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