A train 100 meters long completely passes a static pole in 5 seconds. Find its speed in km/h. MCQ with Answer and Explanation
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Question #1
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Excluding regular route passenger stops, the speed of an express coach is 64 km/h and including stops it is 48 km/h. For how many minutes does the coach stop per hour?
Correct Answer: Option A
Explanation:
Stoppage time per hour = (64 - 48) / 64 = 16 / 64 = 1/4 hour. In minutes = (1/4) * 60 = 15 minutes.
Stoppage time per hour = (64 - 48) / 64 = 16 / 64 = 1/4 hour. In minutes = (1/4) * 60 = 15 minutes.
This question belongs to:
Maths
Time Speed and Distance
Question #2
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A man can row 8 km/h in still water. If the river is running at 4 km/h, it takes him 6 hours to row to a place and back. How far is the place?
Correct Answer: Option C
Explanation:
Downstream speed = 8 + 4 = 12 km/h. Upstream speed = 8 - 4 = 4 km/h. Let distance be d. d/12 + d/4 = 6 => 4d/12 = 6 => d/3 = 6 => d = 18 km.
Downstream speed = 8 + 4 = 12 km/h. Upstream speed = 8 - 4 = 4 km/h. Let distance be d. d/12 + d/4 = 6 => 4d/12 = 6 => d/3 = 6 => d = 18 km.
This question belongs to:
Maths
Time Speed and Distance
Question #3
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Two cars start from the same place at the same time in the same direction. The first car runs at a constant speed of 50 km/h and the second car runs at 60 km/h. What is the distance between them after 3 hours 30 minutes?
Correct Answer: Option A
Explanation:
Relative speed = 60 - 50 = 10 km/h. Time = 3.5 hours. Distance between them = Relative Speed * Time = 10 * 3.5 = 35 km.
Relative speed = 60 - 50 = 10 km/h. Time = 3.5 hours. Distance between them = Relative Speed * Time = 10 * 3.5 = 35 km.
This question belongs to:
Maths
Time Speed and Distance
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