A commuter train passes a standing track post in 6 seconds flat. If the length of the train is 150 meters, find its speed in km/h. MCQ with Answer and Explanation
Question
Report Error
Discuss this Question (0)
Practice More Time Speed and Distance Questions
Question #1
Report Error
Two cars A and B travel from one city to another at speeds of 72 km/h and 90 km/h respectively. If car A takes 1 hour more than car B for the journey, what is the distance between the two cities?
Correct Answer: Option D
Explanation:
Let distance be d. d/72 - d/90 = 1 => (5d - 4d)/360 = 1 => d/360 = 1 => d = 360 km.
Let distance be d. d/72 - d/90 = 1 => (5d - 4d)/360 = 1 => d/360 = 1 => d = 360 km.
This question belongs to:
Maths
Time Speed and Distance
Question #2
Report Error
A person walks from home to school at 4 km/h and arrives 5 minutes late. If he runs at 5 km/h, he arrives 4 minutes early. Find the distance.
Correct Answer: Option B
Explanation:
Time difference = 5 - (-4) = 9 minutes = 9/60 = 0.15 hours. Let distance be d. d / 4 - d / 5 = 0.15 => d / 20 = 0.15 => d = 3 km.
Time difference = 5 - (-4) = 9 minutes = 9/60 = 0.15 hours. Let distance be d. d / 4 - d / 5 = 0.15 => d / 20 = 0.15 => d = 3 km.
This question belongs to:
Maths
Time Speed and Distance
Question #3
Report Error
A person covers 1/3 of a distance at 15 km/h, 1/3 at 30 km/h and the last 1/3 at 60 km/h. Find the average speed.
Correct Answer: Option C
Explanation:
Let each third of the distance be 60 km. Total distance = 180 km. Total time taken = 60/15 + 60/30 + 60/60 = 4 + 2 + 1 = 7 hours. Average speed = 180 / 7 = 25.71 km/h.
Let each third of the distance be 60 km. Total distance = 180 km. Total time taken = 60/15 + 60/30 + 60/60 = 4 + 2 + 1 = 7 hours. Average speed = 180 / 7 = 25.71 km/h.
This question belongs to:
Maths
Time Speed and Distance
No comments yet. Be the first to start the discussion!