A train 130 meters long passes a platform 270 meters long in 20 seconds. What is the speed of the train in km/h? MCQ with Answer and Explanation
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Question #1
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A train 100 meters long running at 90 km/h crosses another train 150 meters long running at 54 km/h in the same direction. How much time do they take to cross each other?
Correct Answer: Option B
Explanation:
Total distance = 100 + 150 = 250 meters. Relative speed in same direction = 90 - 54 = 36 km/h = 36 * (5/18) = 10 m/s. Time taken = 250 / 10 = 25 seconds.
Total distance = 100 + 150 = 250 meters. Relative speed in same direction = 90 - 54 = 36 km/h = 36 * (5/18) = 10 m/s. Time taken = 250 / 10 = 25 seconds.
This question belongs to:
Maths
Time Speed and Distance
Question #2
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A sound wave maps along a linear distance path at 340 m/s. How many kilometers does it cover in exactly 25 seconds?
Correct Answer: Option D
Explanation:
Distance = Speed * Time = 340 * 25 = 8500 meters. Converting to kilometers = 8500 / 1000 = 8.5 km.
Distance = Speed * Time = 340 * 25 = 8500 meters. Converting to kilometers = 8500 / 1000 = 8.5 km.
This question belongs to:
Maths
Time Speed and Distance
Question #3
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A train 120 meters long running at 108 km/h completely passes another train 180 meters long running at 72 km/h in the same direction. How much time do they take to clear each other?
Correct Answer: Option C
Explanation:
Total distance to be covered = 120 + 180 = 300 meters. Relative speed in same direction = 108 - 72 = 36 km/h = 36 * (5/18) = 10 m/s. Time taken = 300 / 10 = 30 seconds.
Total distance to be covered = 120 + 180 = 300 meters. Relative speed in same direction = 108 - 72 = 36 km/h = 36 * (5/18) = 10 m/s. Time taken = 300 / 10 = 30 seconds.
This question belongs to:
Maths
Time Speed and Distance
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