A car covers a certain distance at an average speed of 48 km/h in 5 hours. At what speed must it travel to cover the same distance in 4 hours? MCQ with Answer and Explanation

A car covers a certain distance at an average speed of 48 km/h in 5 hours. At what speed must it travel to cover the same distance in 4 hours?
A. 55 km/h
B. 60 km/h
C. 70 km/h
D. 65 km/h
Answer: Option B
Solution (By JKSSB Mock Tests)
Distance = 48 * 5 = 240 km. New required speed = 240 / 4 = 60 km/h.

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Practice More Time Speed and Distance Questions

Question #1
A train 180 meters long is running at a speed of 90 km/h. How long will it take to pass a post?
A. 9 seconds
B. 7.2 seconds
C. 6 seconds
D. 8 seconds

Correct Answer: Option B


Explanation:
Speed = 90 * (5/18) = 25 m/s. Time to pass a post = 180 / 25 = 7.2 seconds.

This question belongs to: Maths Time Speed and Distance
Question #2
A sound wave covers a distance of 1.7 km in 5 seconds. What is the speed of sound in m/s?
A. 350 m/s
B. 320 m/s
C. 360 m/s
D. 340 m/s

Correct Answer: Option D


Explanation:
Distance = 1.7 km = 1700 meters. Speed = Distance / Time = 1700 / 5 = 340 m/s.

This question belongs to: Maths Time Speed and Distance
Question #3
The speeds of two cars are in the ratio 5 : 3. If they cover the same total distance, and the slower car takes 2.5 hours, how much time does the faster car take?
A. 1.5 hours
B. 1.8 hours
C. 2.0 hours
D. 1.2 hours

Correct Answer: Option A


Explanation:
Ratio of speeds = 5:3, so ratio of times taken = 3:5. The slower car corresponds to 5 parts = 2.5 hours => 1 part = 0.5 hours. Time for the faster car = 3 parts = 3 * 0.5 = 1.5 hours.

This question belongs to: Maths Time Speed and Distance