A truck covers a distance of 360 km in 6 hours. How much time will it take to cover a distance of 240 km at the same speed? MCQ with Answer and Explanation

Question

A truck covers a distance of 360 km in 6 hours. How much time will it take to cover a distance of 240 km at the same speed?

A. 5.0 hours

B. 4.0 hours

C. 4.5 hours

D. 3.5 hours

Answer: Option B

Solution (By JKExamLibrary)

Speed of truck = 360 / 6 = 60 km/h. Time taken for 240 km = 240 / 60 = 4 hours.

This question belongs to: Maths Time Speed and Distance

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A legal clerk walks from his residence to the courthouse at 5 km/h and arrives 15 minutes late. If he sets a pace of 7.5 km/h, he arrives 5 minutes early. Find the distance.

A. 5.0 km

B. 5.5 km

C. 6.0 km

D. 4.5 km

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Correct Answer: Option A

Explanation:
Time difference = 15 - (-5) = 20 minutes = 20/60 = 1/3 hours. Let distance be d. d/5 - d/7.5 = 1/3 => (1.5d - d) / 7.5 = 1/3 => 0.5d / 7.5 = 1/3 => d / 15 = 1/3 => d = 5 km.

This question belongs to: Maths Time Speed and Distance