A cyclist covers 1200 meters in 4 minutes flat. Find his speed index in km/h. MCQ with Answer and Explanation
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Question #1
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A train 110 meters long crosses a pole in 5.5 seconds. What is its speed in km/h?
Correct Answer: Option A
Explanation:
Speed of train = 110 / 5.5 = 20 m/s. In km/h = 20 * (18/5) = 72 km/h.
Speed of train = 110 / 5.5 = 20 m/s. In km/h = 20 * (18/5) = 72 km/h.
This question belongs to:
Maths
Time Speed and Distance
Question #2
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A cart wheel turns 1000 revolutions to bridge a sector distance of 1320 meters. Find the diameter size of the turning wheel.
Correct Answer: Option C
Explanation:
Distance covered in 1 single turn revolution = 1320 / 1000 = 1.32 meters = 132 cm. Circumference = 2 * (22/7) * r = 132 cm => Diameter (2r) * (22/7) = 132 => Diameter = 132 * 7 / 22 = 6 * 7 = 42 cm.
Distance covered in 1 single turn revolution = 1320 / 1000 = 1.32 meters = 132 cm. Circumference = 2 * (22/7) * r = 132 cm => Diameter (2r) * (22/7) = 132 => Diameter = 132 * 7 / 22 = 6 * 7 = 42 cm.
This question belongs to:
Maths
Time Speed and Distance
Question #3
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A worker reaches his factory 15 minutes late if he walks at 4 km/h, and 10 minutes early if he walks at 6 km/h. Find the distance to his factory.
Correct Answer: Option D
Explanation:
Time difference = 15 - (-10) = 25 minutes = 25/60 = 5/12 hour. Let distance be d. d/4 - d/6 = 5/12 => d/12 = 5/12 => d = 5 km.
Time difference = 15 - (-10) = 25 minutes = 25/60 = 5/12 hour. Let distance be d. d/4 - d/6 = 5/12 => d/12 = 5/12 => d = 5 km.
This question belongs to:
Maths
Time Speed and Distance
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