A passenger locomotive 150 meters long clears a pedestrian tracking on the lines in 10 seconds flat when both proceed along the same direction. If the pedestrian walks at 4 km/h, find the train speed. MCQ with Answer and Explanation
A passenger locomotive 150 meters long clears a pedestrian tracking on the lines in 10 seconds flat when both proceed along the same direction. If the pedestrian walks at 4 km/h, find the train speed.
A. 54 km/h
B. 66 km/h
C. 62 km/h
D. 58 km/h
Answer: Option D
Solution (By JKSSB Mock Tests)
Relative tracking speed = 150 / 10 = 15 m/s = 15 * (18/5) = 54 km/h. In the identical direction, Relative Speed = Speed of train - Speed of pedestrian => 54 = Speed of train - 4 => Speed of train = 58 km/h.
A person walks from his house to his office at a speed of 4 km/h and reaches 10 minutes late. If he walks at 5 km/h, he reaches 5 minutes early. Find the distance between his house and office.
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