A car covers a certain distance at 50 km/h. If the speed is increased to 75 km/h, it arrives 20 minutes earlier. Find the distance. MCQ with Answer and Explanation
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Question #1
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A train 100 meters long completely passes a static pole in 5 seconds. Find its speed in km/h.
Correct Answer: Option B
Explanation:
Speed = 100 / 5 = 20 m/s. In km/h = 20 * (18/5) = 72 km/h.
Speed = 100 / 5 = 20 m/s. In km/h = 20 * (18/5) = 72 km/h.
This question belongs to:
Maths
Time Speed and Distance
Question #2
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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?
Correct Answer: Option D
Explanation:
Speed = 12 / 2 = 6 km/h. Distance in 5 hours = 6 * 5 = 30 km.
Speed = 12 / 2 = 6 km/h. Distance in 5 hours = 6 * 5 = 30 km.
This question belongs to:
Maths
Time Speed and Distance
Question #3
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A boatman rows 30 km downstream and 18 km upstream, taking 3 hours for each leg of the journey. Find the speed of the boat in still water.
Correct Answer: Option C
Explanation:
Downstream speed = 30 / 3 = 10 km/h. Upstream speed = 18 / 3 = 6 km/h. Speed in still water = (10 + 6) / 2 = 8 km/h.
Downstream speed = 30 / 3 = 10 km/h. Upstream speed = 18 / 3 = 6 km/h. Speed in still water = (10 + 6) / 2 = 8 km/h.
This question belongs to:
Maths
Time Speed and Distance
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