A bus runs at 40 km/h for 2 hours and 50 km/h for the next 3 hours. Find the average speed of the bus for the total journey. MCQ with Answer and Explanation
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Question #1
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In a 600-meter race, A finishes in 66 seconds and B finishes in 75 seconds. By what distance does A beat B?
Correct Answer: Option B
Explanation:
Speed of B = 600 / 75 = 8 m/s. Distance covered by B when A crosses the finish line at 66 seconds = 8 * 66 = 528 meters. Winning margin = 600 - 528 = 72 meters.
Speed of B = 600 / 75 = 8 m/s. Distance covered by B when A crosses the finish line at 66 seconds = 8 * 66 = 528 meters. Winning margin = 600 - 528 = 72 meters.
This question belongs to:
Maths
Time Speed and Distance
Question #2
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A train 160 meters long passes a standing man in 8 seconds. What is the speed of the train?
Correct Answer: Option B
Explanation:
Speed = 160 / 8 = 20 m/s. In km/h = 20 * (18/5) = 72 km/h.
Speed = 160 / 8 = 20 m/s. In km/h = 20 * (18/5) = 72 km/h.
This question belongs to:
Maths
Time Speed and Distance
Question #3
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Excluding stoppages, the speed of a bus is 54 km/h and including stoppages, it is 45 km/h. For how many minutes does the bus stop per hour?
Correct Answer: Option D
Explanation:
Stoppage time per hour = (Fast Speed - Slow Speed) / Fast Speed = (54 - 45) / 54 = 9 / 54 = 1/6 hour. In minutes = (1/6) * 60 = 10 minutes.
Stoppage time per hour = (Fast Speed - Slow Speed) / Fast Speed = (54 - 45) / 54 = 9 / 54 = 1/6 hour. In minutes = (1/6) * 60 = 10 minutes.
This question belongs to:
Maths
Time Speed and Distance
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