A car covers a specific distance path at an average speed of 40 km/h and returns along the same course layout at 60 km/h. Find the average speed for the round journey. MCQ with Answer and Explanation
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Question #1
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A vehicle covers a certain distance at 48 km/h in 5 hours. How much time will it take to cover the same distance at 60 km/h?
Correct Answer: Option D
Explanation:
Distance = 48 * 5 = 240 km. New time required = 240 / 60 = 4 hours.
Distance = 48 * 5 = 240 km. New time required = 240 / 60 = 4 hours.
This question belongs to:
Maths
Time Speed and Distance
Question #2
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A person covers a distance of 120 km at 30 km/h and another 180 km at 45 km/h. Find his average speed for the whole journey.
Correct Answer: Option B
Explanation:
Total distance = 120 + 180 = 300 km. Total time taken = 120/30 + 180/45 = 4 + 4 = 8 hours. Average speed = 300 / 8 = 37.5 km/h.
Total distance = 120 + 180 = 300 km. Total time taken = 120/30 + 180/45 = 4 + 4 = 8 hours. Average speed = 300 / 8 = 37.5 km/h.
This question belongs to:
Maths
Time Speed and Distance
Question #3
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A train passes a standing passenger in 8 seconds and crosses a 180-meter long platform in 17 seconds. Find the speed of the train.
Correct Answer: Option D
Explanation:
Time taken to pass the platform alone = 17 - 8 = 9 seconds. Speed of train = 180 / 9 = 20 m/s.
Time taken to pass the platform alone = 17 - 8 = 9 seconds. Speed of train = 180 / 9 = 20 m/s.
This question belongs to:
Maths
Time Speed and Distance
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