A person walks from his house to office at 5 km/h and arrives 12 minutes late. If he walks at 6 km/h, he arrives 2 minutes late. Find the distance. MCQ with Answer and Explanation
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Question #1
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Excluding stoppages, a bus travels at 54 km/h and including stoppages it travels at 45 km/h. How many minutes does the bus stop per hour?
Correct Answer: Option C
Explanation:
Stoppage time per hour = (54 - 45) / 54 = 9 / 54 = 1/6 hour. In minutes = (1/6) * 60 = 10 minutes.
Stoppage time per hour = (54 - 45) / 54 = 9 / 54 = 1/6 hour. In minutes = (1/6) * 60 = 10 minutes.
This question belongs to:
Maths
Time Speed and Distance
Question #2
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If a person covers a distance of 120 km in 3 hours, find his speed in meters per second.
Correct Answer: Option C
Explanation:
Speed = 120 / 3 = 40 km/h. Converting to m/s = 40 * (5/18) = 200 / 18 = 11.11 m/s.
Speed = 120 / 3 = 40 km/h. Converting to m/s = 40 * (5/18) = 200 / 18 = 11.11 m/s.
This question belongs to:
Maths
Time Speed and Distance
Question #3
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A thief escapes from police custody at 1:00 PM running at 45 km/h. The police discover the escape at 1:20 PM and start chasing him at 60 km/h. At what time will the police catch the thief?
Correct Answer: Option C
Explanation:
In 20 minutes (1/3 hour), the thief covers 45 * (1/3) = 15 km. Relative speed = 60 - 45 = 15 km/h. Time taken to catch = 15 / 15 = 1 hour. Catching time = 1:20 PM + 1 hour = 2:20 PM.
In 20 minutes (1/3 hour), the thief covers 45 * (1/3) = 15 km. Relative speed = 60 - 45 = 15 km/h. Time taken to catch = 15 / 15 = 1 hour. Catching time = 1:20 PM + 1 hour = 2:20 PM.
This question belongs to:
Maths
Time Speed and Distance
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