A car covers a certain distance at an average speed of 50 km/h in 6 hours. At what speed must it travel to cover the same distance in 5 hours? MCQ with Answer and Explanation

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A car covers a certain distance at an average speed of 50 km/h in 6 hours. At what speed must it travel to cover the same distance in 5 hours?

A. 55 km/h

B. 65 km/h

C. 70 km/h

D. 60 km/h

Answer: Option D

Solution (By JKExamLibrary)

Distance = 50 * 6 = 300 km. New required speed = 300 / 5 = 60 km/h.

This question belongs to: Maths Time Speed and Distance

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Practice More Time Speed and Distance Questions

Question #1 Report Error

A train passes a standing track worker in 12 seconds and crosses a platform 200 meters long in 22 seconds. Find the length of the train.

A. 300 meters

B. 200 meters

C. 240 meters

D. 250 meters

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Correct Answer: Option C

Explanation:
Time taken to cross platform alone = 22 - 12 = 10 seconds. Speed of train = 200 / 10 = 20 m/s. Length of train = Speed * Time to cross worker = 20 * 12 = 240 meters.

This question belongs to: Maths Time Speed and Distance

Question #2 Report Error

Two cars leave a location simultaneously at a right angle to each other. Their speeds are 36 km/h and 48 km/h respectively. Find the direct distance between them after 15 minutes.

A. 12 km

B. 20 km

C. 18 km

D. 15 km

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Correct Answer: Option D

Explanation:
Time = 15 minutes = 0.25 hours. Distance covered by first car = 36 * 0.25 = 9 km. Distance covered by second car = 48 * 0.25 = 12 km. Since they travel at right angles, distance between them = sqrt(9^2 + 12^2) = sqrt(81 + 144) = sqrt(225) = 15 km.

This question belongs to: Maths Time Speed and Distance