Walking at 6/7 of his typical speed, a clerk reaches his documentation terminal 14 minutes late. What is his typical time? MCQ with Answer and Explanation
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Question #1
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A car covers a distance of 100 km at 40 km/h and another 150 km at 50 km/h. Find the average speed for the complete trip.
Correct Answer: Option B
Explanation:
Total distance = 100 + 150 = 250 km. Time 1 = 100 / 40 = 2.5 hours. Time 2 = 150 / 50 = 3 hours. Total time = 5.5 hours. Average speed = 250 / 5.5 = 45.45 km/h.
Total distance = 100 + 150 = 250 km. Time 1 = 100 / 40 = 2.5 hours. Time 2 = 150 / 50 = 3 hours. Total time = 5.5 hours. Average speed = 250 / 5.5 = 45.45 km/h.
This question belongs to:
Maths
Time Speed and Distance
Question #2
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A runner covers a 100-meter race. The winner finishes in 10 seconds while the runner-up finishes in 10.5 seconds. By what distance does the winner beat the runner-up?
Correct Answer: Option C
Explanation:
Speed of the runner-up = 100 / 10.5 = 200 / 21 m/s. Distance covered by the runner-up in 10 seconds = (200 / 21) * 10 = 2000 / 21 = 95.24 meters. Distance winner beats runner-up by = 100 - 95.24 = 4.76 meters.
Speed of the runner-up = 100 / 10.5 = 200 / 21 m/s. Distance covered by the runner-up in 10 seconds = (200 / 21) * 10 = 2000 / 21 = 95.24 meters. Distance winner beats runner-up by = 100 - 95.24 = 4.76 meters.
This question belongs to:
Maths
Time Speed and Distance
Question #3
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A cargo container vehicle spans 450 meters in exactly 30 seconds. Find its baseline speed index in km/h.
Correct Answer: Option A
Explanation:
Speed = 450 / 30 = 15 m/s. In km/h index = 15 * (18/5) = 54 km/h.
Speed = 450 / 30 = 15 m/s. In km/h index = 15 * (18/5) = 54 km/h.
This question belongs to:
Maths
Time Speed and Distance
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