A private sedan tracks a sector path length of 480 km in 5 hours 20 minutes. Find its mean average speed index. MCQ with Answer and Explanation
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Question #1
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A train passes a platform 110 meters long in 40 seconds and a boy standing on the platform in 30 seconds. Find the length of the train.
Correct Answer: Option A
Explanation:
Let length of train be L. Speed = L/30. Also, Speed = (L+110)/40. So L/30 = (L+110)/40 => 4L = 3L + 330 => L = 330 meters.
Let length of train be L. Speed = L/30. Also, Speed = (L+110)/40. So L/30 = (L+110)/40 => 4L = 3L + 330 => L = 330 meters.
This question belongs to:
Maths
Time Speed and Distance
Question #2
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A train 140 meters long passes a roadside platform 260 meters long in 20 seconds. Find the speed of the train in km/h.
Correct Answer: Option C
Explanation:
Total distance = 140 + 260 = 400 meters. Speed = 400 / 20 = 20 m/s. In km/h = 20 * (18/5) = 72 km/h.
Total distance = 140 + 260 = 400 meters. Speed = 400 / 20 = 20 m/s. In km/h = 20 * (18/5) = 72 km/h.
This question belongs to:
Maths
Time Speed and Distance
Question #3
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A person covers a distance of 12 km in 1 hour 30 minutes. What is his speed in meters per second?
Correct Answer: Option D
Explanation:
Time = 1.5 hours. Speed = 12 / 1.5 = 8 km/h. To convert into m/s, multiply by 5/18. Speed = 8 * (5/18) = 40 / 18 = 2.22 m/s.
Time = 1.5 hours. Speed = 12 / 1.5 = 8 km/h. To convert into m/s, multiply by 5/18. Speed = 8 * (5/18) = 40 / 18 = 2.22 m/s.
This question belongs to:
Maths
Time Speed and Distance
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