A train passes a pedestrian standing on a platform in 6 seconds and passes the platform itself, which is 150 meters long, in 11 seconds. Find the speed of the train in km/h. MCQ with Answer and Explanation

A train passes a pedestrian standing on a platform in 6 seconds and passes the platform itself, which is 150 meters long, in 11 seconds. Find the speed of the train in km/h.
A. 90 km/h
B. 135 km/h
C. 120 km/h
D. 108 km/h
Answer: Option D
Solution (By JKSSB Mock Tests)
Time taken to cross the platform alone = 11 - 6 = 5 seconds. Speed of train = 150 / 5 = 30 m/s. In km/h = 30 * (18/5) = 108 km/h.

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Practice More Time Speed and Distance Questions

Question #1
Two locomotive train units of equal layout lengths pass a single track sign pole in 10 seconds and 15 seconds. If each train length tracks at 120 meters, find the time parameter to pass each other completely when running in opposite directions.
A. 10 seconds
B. 16 seconds
C. 12 seconds
D. 14 seconds

Correct Answer: Option C


Explanation:
Speed of first train = 120 / 10 = 12 m/s. Speed of second train = 120 / 15 = 8 m/s. Total tracking distance = 120 + 120 = 240 meters. Relative speed in opposite directions = 12 + 8 = 20 m/s. Time required = 240 / 20 = 12 seconds.

This question belongs to: Maths Time Speed and Distance
Question #2
A sound wave travels at a speed of 340 m/s. How long does it take to span a line distance of 5.1 km?
A. 15 seconds
B. 20 seconds
C. 18 seconds
D. 12 seconds

Correct Answer: Option A


Explanation:
Distance = 5.1 km = 5100 meters. Time taken = 5100 / 340 = 15 seconds.

This question belongs to: Maths Time Speed and Distance
Question #3
A car travels from A to B at 40 km/h and returns to A at 60 km/h. What is the average speed for the round journey?
A. 48 km/h
B. 46 km/h
C. 50 km/h
D. 52 km/h

Correct Answer: Option A


Explanation:
Average Speed = 2xy / (x + y) = (2 * 40 * 60) / (40 + 60) = 4800 / 100 = 48 km/h.

This question belongs to: Maths Time Speed and Distance