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      Question

      A train moving at a speed of 'x' kilometers per hour

      passes a pole in 18 seconds and crosses a 240-meter long platform in 30 seconds. How far does the train travel in 15 hours?
      A 2040 km Correct Answer Incorrect Answer
      B 1080 km Correct Answer Incorrect Answer
      C 1240 km Correct Answer Incorrect Answer
      D 1120 km Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      Let speed of train = y m//s So, length of train = 18 Γ— y = 18y metres According to question; (18y + 240) = 30y Or, 12y = 240 Or, y = 20 m/s So, x = 20 Γ— 18/5 = 72 km/h Desired distance = 72 Γ— 15 = 1080 km

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