A train 125 meters long passes a man running at 5 km/h in the same direction in 10 seconds. Find the speed of the train. MCQ with Answer and Explanation
A train 125 meters long passes a man running at 5 km/h in the same direction in 10 seconds. Find the speed of the train.
A. 54 km/h
B. 45 km/h
C. 60 km/h
D. 50 km/h
Answer: Option D
Solution (By JKExamLibrary)
Relative speed = 125 / 10 = 12.5 m/s = 12.5 * (18/5) = 45 km/h. Since they are in the same direction: Relative Speed = Speed of train - Speed of man => 45 = Speed of train - 5 => Speed of train = 50 km/h.
Two passenger trains of equal layout lengths cross a station pole in 15 seconds and 30 seconds respectively. If each train length measures 150 meters, find the time parameter required to pass each other completely when tracking in opposite directions.
If a student walks from his house to school at 5 km/h, he is late by 10 minutes. However, if he walks at 6 km/h, he is late by only 2 minutes. Find the distance between his house and school.
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