A cyclist covers 900 meters in exactly 3 minutes. Find his speed in km/h. MCQ with Answer and Explanation
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Question #1
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A person covers a distance of 100 km at 25 km/h and another 150 km at 50 km/h. Find his average speed for the whole journey.
Correct Answer: Option C
Explanation:
Total distance = 100 + 150 = 250 km. Total time taken = 100/25 + 150/50 = 4 + 3 = 7 hours. Average speed = 250 / 7 = 35.71 km/h.
Total distance = 100 + 150 = 250 km. Total time taken = 100/25 + 150/50 = 4 + 3 = 7 hours. Average speed = 250 / 7 = 35.71 km/h.
This question belongs to:
Maths
Time Speed and Distance
Question #2
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A train running at 90 km/h crosses a platform double its length in 36 seconds. What is the length of the platform?
Correct Answer: Option B
Explanation:
Speed of train = 90 * (5/18) = 25 m/s. Total distance covered in 36 seconds = 25 * 36 = 900 meters. Let train length be L, so platform length = 2L. L + 2L = 900 => 3L = 900 => L = 300 meters. Platform length = 2L = 600 meters.
Speed of train = 90 * (5/18) = 25 m/s. Total distance covered in 36 seconds = 25 * 36 = 900 meters. Let train length be L, so platform length = 2L. L + 2L = 900 => 3L = 900 => L = 300 meters. Platform length = 2L = 600 meters.
This question belongs to:
Maths
Time Speed and Distance
Question #3
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A truck covers a distance of 240 km in 4 hours. How much time will it take to cover a distance of 180 km at the same speed?
Correct Answer: Option C
Explanation:
Speed of truck = 240 / 4 = 60 km/h. Time taken for 180 km = 180 / 60 = 3 hours.
Speed of truck = 240 / 4 = 60 km/h. Time taken for 180 km = 180 / 60 = 3 hours.
This question belongs to:
Maths
Time Speed and Distance
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