In a 100-meter race, A can beat B by 15 meters and C by 28 meters. In a race of 85 meters, by how many meters can B beat C? MCQ with Answer and Explanation
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Question #1
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A person can walk at 5 km/h. How many meters can he cover in 12 minutes?
Correct Answer: Option C
Explanation:
Speed = 5 km/h = 5000 meters / 60 minutes = 83.33 meters per minute. Distance in 12 minutes = 83.33 * 12 = 1000 meters.
Speed = 5 km/h = 5000 meters / 60 minutes = 83.33 meters per minute. Distance in 12 minutes = 83.33 * 12 = 1000 meters.
This question belongs to:
Maths
Time Speed and Distance
Question #2
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A motorboat covers 24 km downstream in 1.5 hours and covers the same distance upstream in 3 hours. Find the speed of the boat in still water.
Correct Answer: Option D
Explanation:
Downstream speed = 24 / 1.5 = 16 km/h. Upstream speed = 24 / 3 = 8 km/h. Speed in still water = (16 + 8) / 2 = 12 km/h.
Downstream speed = 24 / 1.5 = 16 km/h. Upstream speed = 24 / 3 = 8 km/h. Speed in still water = (16 + 8) / 2 = 12 km/h.
This question belongs to:
Maths
Time Speed and Distance
Question #3
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Two delivery cars start from the same warehouse at the same time in identical directions. The first tracks a constant speed of 45 km/h and the second runs at 55 km/h. What is the distance between them after 2 hours 30 minutes?
Correct Answer: Option C
Explanation:
Relative speed = 55 - 45 = 10 km/h. Time = 2.5 hours. Distance separation = Relative Speed * Time = 10 * 2.5 = 25 km.
Relative speed = 55 - 45 = 10 km/h. Time = 2.5 hours. Distance separation = Relative Speed * Time = 10 * 2.5 = 25 km.
This question belongs to:
Maths
Time Speed and Distance
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