A man covers a distance of 12 km in 2 hours by walking. How much distance will he cover in 5 hours if he maintains the same speed? MCQ with Answer and Explanation
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Question #1
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Two trains of equal length cross a pole in 12 seconds and 18 seconds respectively. If the length of each train is 180 meters, find the time taken by them to pass each other when running in opposite directions.
Correct Answer: Option D
Explanation:
Speed of first train = 180 / 12 = 15 m/s. Speed of second train = 180 / 18 = 10 m/s. Total distance to cross = 180 + 180 = 360 meters. Relative speed in opposite directions = 15 + 10 = 25 m/s. Time taken = 360 / 25 = 14.4 seconds.
Speed of first train = 180 / 12 = 15 m/s. Speed of second train = 180 / 18 = 10 m/s. Total distance to cross = 180 + 180 = 360 meters. Relative speed in opposite directions = 15 + 10 = 25 m/s. Time taken = 360 / 25 = 14.4 seconds.
This question belongs to:
Maths
Time Speed and Distance
Question #2
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A person travels from P to Q at a speed of 30 km/h and returns from Q to P at a speed of 40 km/h. What is the ratio of time taken by him in the forward journey to that in the return journey?
Correct Answer: Option C
Explanation:
Since distance is constant, time is inversely proportional to speed. Ratio of times = Speed2 : Speed1 = 40 : 30 = 4:3.
Since distance is constant, time is inversely proportional to speed. Ratio of times = Speed2 : Speed1 = 40 : 30 = 4:3.
This question belongs to:
Maths
Time Speed and Distance
Question #3
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A cyclist handles 600 meters in exactly 2 minutes. Find his moving velocity in km/h.
Correct Answer: Option B
Explanation:
Time = 2 minutes = 120 seconds. Speed = 600 / 120 = 5 m/s. In km/h = 5 * (18/5) = 18 km/h.
Time = 2 minutes = 120 seconds. Speed = 600 / 120 = 5 m/s. In km/h = 5 * (18/5) = 18 km/h.
This question belongs to:
Maths
Time Speed and Distance
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