A merchant van covers 120 km at 40 km/h, 180 km at 60 km/h and 100 km at 50 km/h. Find the net average speed. MCQ with Answer and Explanation
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Question #1
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A runner covers 200 meters in 22 seconds. Find his approximate speed in km/h.
Correct Answer: Option C
Explanation:
Speed = 200 / 22 m/s = 100 / 11 m/s. In km/h = (100 / 11) * (18/5) = 360 / 11 = 32.72 km/h.
Speed = 200 / 22 m/s = 100 / 11 m/s. In km/h = (100 / 11) * (18/5) = 360 / 11 = 32.72 km/h.
This question belongs to:
Maths
Time Speed and Distance
Question #2
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Two cars start from the same spot and travel along perpendicular roads. One travels at 30 km/h and the other at 40 km/h. Find the distance between them after 1 hour.
Correct Answer: Option C
Explanation:
In 1 hour, the first car travels 30 km and the second car travels 40 km. Direct distance = sqrt(30^2 + 40^2) = sqrt(900 + 1600) = sqrt(2500) = 50 km.
In 1 hour, the first car travels 30 km and the second car travels 40 km. Direct distance = sqrt(30^2 + 40^2) = sqrt(900 + 1600) = sqrt(2500) = 50 km.
This question belongs to:
Maths
Time Speed and Distance
Question #3
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Excluding institutional stops, a transit bus routes at 60 km/h and including stops it runs at 50 km/h. How many minutes does the bus stop per hour?
Correct Answer: Option A
Explanation:
Stoppage time per hour = (60 - 50) / 60 = 10 / 60 = 1/6 hour = 10 minutes.
Stoppage time per hour = (60 - 50) / 60 = 10 / 60 = 1/6 hour = 10 minutes.
This question belongs to:
Maths
Time Speed and Distance
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