A cyclist handles 600 meters in exactly 2 minutes. Find his moving velocity in km/h. MCQ with Answer and Explanation
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Question #1
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A man rows a boat 30 km downstream in 3 hours and returns upstream in 6 hours. Find the speed of the stream.
Correct Answer: Option B
Explanation:
Downstream speed = 30 / 3 = 10 km/h. Upstream speed = 30 / 6 = 5 km/h. Speed of stream = (10 - 5) / 2 = 2.5 km/h.
Downstream speed = 30 / 3 = 10 km/h. Upstream speed = 30 / 6 = 5 km/h. Speed of stream = (10 - 5) / 2 = 2.5 km/h.
This question belongs to:
Maths
Time Speed and Distance
Question #2
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A motor car finishes a journey in 6 hours. It covers the first half of the distance at 40 km/h and the second half at 20 km/h. Find the total distance covered.
Correct Answer: Option D
Explanation:
Let the half distance be d. d / 40 + d / 20 = 6 => 3d / 40 = 6 => 3d = 240 => d = 80 km. Total distance = 2d = 160 km.
Let the half distance be d. d / 40 + d / 20 = 6 => 3d / 40 = 6 => 3d = 240 => d = 80 km. Total distance = 2d = 160 km.
This question belongs to:
Maths
Time Speed and Distance
Question #3
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A passenger train 200 meters long crosses a platform 300 meters long in 20 seconds. What is the speed of the train in km/h?
Correct Answer: Option C
Explanation:
Total distance = 200 + 300 = 500 meters. Speed = 500 / 20 = 25 m/s. Converting to km/h = 25 * (18/5) = 90 km/h.
Total distance = 200 + 300 = 500 meters. Speed = 500 / 20 = 25 m/s. Converting to km/h = 25 * (18/5) = 90 km/h.
This question belongs to:
Maths
Time Speed and Distance
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