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? MCQ with Answer and Explanation
Question
Report Error
Discuss this Question (0)
Practice More Time Speed and Distance Questions
Question #1
Report Error
A car covers a distance of 180 km at a uniform speed. If the speed is increased by 10 km/h, the journey takes 3 hours. Find the initial speed of the car.
Correct Answer: Option A
Explanation:
New speed = 180 / 3 = 60 km/h. Since the new speed is 10 km/h faster than the original speed, original speed = 60 - 10 = 50 km/h.
New speed = 180 / 3 = 60 km/h. Since the new speed is 10 km/h faster than the original speed, original speed = 60 - 10 = 50 km/h.
This question belongs to:
Maths
Time Speed and Distance
Question #2
Report Error
An aeroplane flies along the four sides of a square at speeds of 200, 400, 600 and 800 km/h. Find the average speed of the plane around the field.
Correct Answer: Option C
Explanation:
Let each side of square be 2400 km (LCM of 200, 400, 600, 800). Total distance = 4 * 2400 = 9600 km. Total time = 2400/200 + 2400/400 + 2400/600 + 2400/800 = 12 + 6 + 4 + 3 = 25 hours. Average speed = 9600 / 25 = 384 km/h.
Let each side of square be 2400 km (LCM of 200, 400, 600, 800). Total distance = 4 * 2400 = 9600 km. Total time = 2400/200 + 2400/400 + 2400/600 + 2400/800 = 12 + 6 + 4 + 3 = 25 hours. Average speed = 9600 / 25 = 384 km/h.
This question belongs to:
Maths
Time Speed and Distance
Question #3
Report Error
A contract courier can travel at 40 km/h to deliver a package on time. If he travels at 30 km/h, he is late by 2 hours. What is the distance he has to cover?
Correct Answer: Option B
Explanation:
Let the distance be d. Time difference = 2 hours. d/30 - d/40 = 2 => (4d - 3d) / 120 = 2 => d / 120 = 2 => d = 240 km.
Let the distance be d. Time difference = 2 hours. d/30 - d/40 = 2 => (4d - 3d) / 120 = 2 => d / 120 = 2 => d = 240 km.
This question belongs to:
Maths
Time Speed and Distance
No comments yet. Be the first to start the discussion!