A cyclist covers a 3.6 km track in 12 minutes. Find his speed in meters per second. MCQ with Answer and Explanation
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Question #1
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A person travels a distance of 300 km at an average speed of 60 km/h and returns at a speed of 40 km/h. Find the average speed for the round trip.
Correct Answer: Option D
Explanation:
Average Speed = 2xy / (x + y) = (2 * 60 * 40) / (60 + 40) = 4800 / 100 = 48 km/h.
Average Speed = 2xy / (x + y) = (2 * 60 * 40) / (60 + 40) = 4800 / 100 = 48 km/h.
This question belongs to:
Maths
Time Speed and Distance
Question #2
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A wheel makes 2000 revolutions in covering a distance of 44 km. Find the radius of the wheel.
Correct Answer: Option A
Explanation:
Distance covered in 1 revolution = Total Distance / Number of Revolutions = 44000 meters / 2000 = 22 meters. Circumference = 2 * (22/7) * r = 22 => 44r / 7 = 22 => r = 154 / 44 = 3.5 meters.
Distance covered in 1 revolution = Total Distance / Number of Revolutions = 44000 meters / 2000 = 22 meters. Circumference = 2 * (22/7) * r = 22 => 44r / 7 = 22 => r = 154 / 44 = 3.5 meters.
This question belongs to:
Maths
Time Speed and Distance
Question #3
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A civilian covers a 2400-meter long walkway in exactly 8 minutes. Find his moving speed in km/h.
Correct Answer: Option D
Explanation:
Time = 8 minutes = 480 seconds. Speed = 2400 / 480 = 5 m/s. Converting to km/h = 5 * (18/5) = 18 km/h.
Time = 8 minutes = 480 seconds. Speed = 2400 / 480 = 5 m/s. Converting to km/h = 5 * (18/5) = 18 km/h.
This question belongs to:
Maths
Time Speed and Distance
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