A car travels a distance of 300 km at a certain speed. If the speed is increased by 15 km/h, it takes 4 hours for the journey. Find the original speed. MCQ with Answer and Explanation
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Question #1
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A car covers a distance of 150 km in 2 hours 30 minutes. What should be its speed to cover the same distance in 2 hours?
Correct Answer: Option C
Explanation:
Required speed = Distance / Time = 150 / 2 = 75 km/h.
Required speed = Distance / Time = 150 / 2 = 75 km/h.
This question belongs to:
Maths
Time Speed and Distance
Question #2
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The speed of a train is 54 km/h. How many meters does it cross in 20 seconds?
Correct Answer: Option A
Explanation:
Speed = 54 * (5/18) = 15 m/s. Distance in 20 seconds = Speed * Time = 15 * 20 = 300 meters.
Speed = 54 * (5/18) = 15 m/s. Distance in 20 seconds = Speed * Time = 15 * 20 = 300 meters.
This question belongs to:
Maths
Time Speed and Distance
Question #3
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A delivery car handles a total route profile of 360 km. It clears the first half stretch at 45 km/h and the second half at 90 km/h. Find the net average speed.
Correct Answer: Option C
Explanation:
Average Speed = 2xy / (x + y) = (2 * 45 * 90) / (45 + 90) = 8100 / 135 = 60 km/h.
Average Speed = 2xy / (x + y) = (2 * 45 * 90) / (45 + 90) = 8100 / 135 = 60 km/h.
This question belongs to:
Maths
Time Speed and Distance
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