A car travels a distance of 240 km at a uniform speed. If the speed is reduced by 10 km/h, it takes 2 hours longer. Find the original speed. MCQ with Answer and Explanation
Question
Report Error
Discuss this Question (0)
Practice More Time Speed and Distance Questions
Question #1
Report Error
A boatman rows 1 km in 5 minutes along the stream and 1 km in 12 minutes against the stream. Find the speed of the stream.
Correct Answer: Option B
Explanation:
Downstream speed = 1 km / (5/60 hours) = 12 km/h. Upstream speed = 1 km / (12/60 hours) = 5 km/h. Speed of stream = (Downstream speed - Upstream speed) / 2 = (12 - 5) / 2 = 3.5 km/h.
Downstream speed = 1 km / (5/60 hours) = 12 km/h. Upstream speed = 1 km / (12/60 hours) = 5 km/h. Speed of stream = (Downstream speed - Upstream speed) / 2 = (12 - 5) / 2 = 3.5 km/h.
This question belongs to:
Maths
Time Speed and Distance
Question #2
Report Error
A sound wave maps along a linear distance path at 340 m/s. How many kilometers does it cover in exactly 25 seconds?
Correct Answer: Option C
Explanation:
Distance = Speed * Time = 340 * 25 = 8500 meters. Converting to kilometers = 8500 / 1000 = 8.5 km.
Distance = Speed * Time = 340 * 25 = 8500 meters. Converting to kilometers = 8500 / 1000 = 8.5 km.
This question belongs to:
Maths
Time Speed and Distance
Question #3
Report Error
A train 130 meters long passing a platform 170 meters long takes 15 seconds. Find the speed of the train in km/h.
Correct Answer: Option A
Explanation:
Total distance = 130 + 170 = 300 meters. Speed = 300 / 15 = 20 m/s. In km/h = 20 * (18/5) = 72 km/h.
Total distance = 130 + 170 = 300 meters. Speed = 300 / 15 = 20 m/s. In km/h = 20 * (18/5) = 72 km/h.
This question belongs to:
Maths
Time Speed and Distance
No comments yet. Be the first to start the discussion!