Question

A man walking at 5 km/hour noticed that a 225 m long train coming in the opposite direction crossed him in 9 seconds. The speed of the train is:

• A. 75 kmph
• B. 90 kmph
• C. 85 kmph
• D. 80 kmph

Answer 1

Answer:

C. 85 kmph

Solution: Given: A man walking at 5 km/hour noticed that a 225 m long train coming in the opposite direction crossed him in 9 seconds. Calculations: Let the speed of the train be x. Relative Speed = x + 5 kmph Now, Relative speed = Relative Distance/Time ⇒ x + 5 = 0.225/(9/3600) ⇒ x + 5 = 90 Speed of train = 90 - 5 = 85 km/hr Hence, The Required speed of train is 85 km per hour.