A runner completes a 200-meter race in 25 seconds. Find his speed in km/h. MCQ with Answer and Explanation

A runner completes a 200-meter race in 25 seconds. Find his speed in km/h.
A. 28.8 km/h
B. 32.4 km/h
C. 24 km/h
D. 30 km/h
Answer: Option A
Solution (By JKSSB Mock Tests)
Speed in m/s = 200 / 25 = 8 m/s. In km/h = 8 * (18/5) = 144 / 5 = 28.8 km/h.

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Practice More Time Speed and Distance Questions

Question #1
A train 160 meters long running at 54 km/h crosses a platform in 24 seconds. Find the length of the platform.
A. 180 meters
B. 200 meters
C. 220 meters
D. 240 meters

Correct Answer: Option B


Explanation:
Speed of train = 54 * (5/18) = 15 m/s. Total distance covered in 24 seconds = 15 * 24 = 360 meters. Platform length = 360 - 160 = 200 meters.

This question belongs to: Maths Time Speed and Distance
Question #2
A passenger train 100 meters long clears a line worker tracking on the ballast track in 5 seconds flat when both move along the identical direction. If the line worker walks at 8 km/h, find the train speed.
A. 88 km/h
B. 84 km/h
C. 76 km/h
D. 80 km/h

Correct Answer: Option D


Explanation:
Relative tracking speed = 100 / 5 = 20 m/s = 20 * (18/5) = 72 km/h. In identical directions, Relative Speed = Speed of train - Speed of worker => 72 = Speed of train - 8 => Speed of train = 80 km/h.

This question belongs to: Maths Time Speed and Distance
Question #3
Excluding stoppages, the speed of an express train is 60 km/h and including stoppages it is 48 km/h. For how many minutes does the train stop per hour?
A. 15 minutes
B. 14 minutes
C. 12 minutes
D. 10 minutes

Correct Answer: Option C


Explanation:
Stoppage time per hour = (60 - 48) / 60 = 12 / 60 = 1/5 hour. In minutes = (1/5) * 60 = 12 minutes.

This question belongs to: Maths Time Speed and Distance