A modern coach bus covers a distance of 280 km in 4 hours 40 minutes. Find its average speed. MCQ with Answer and Explanation

A modern coach bus covers a distance of 280 km in 4 hours 40 minutes. Find its average speed.
A. 68 km/h
B. 56 km/h
C. 64 km/h
D. 60 km/h
Answer: Option D
Solution (By JKSSB Mock Tests)
Time = 4 hours 40 minutes = 4 + 40/60 = 4.666 hours = 14/3 hours. Speed = Distance / Time = 280 / (14/3) = 280 * 3 / 14 = 20 * 3 = 60 km/h.

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Practice More Time Speed and Distance Questions

Question #1
A person walks from home to school at 5 km/h and arrives 6 minutes late. If he runs at 6 km/h, he arrives 4 minutes early. Find the distance.
A. 5.0 km
B. 6.0 km
C. 4.5 km
D. 5.5 km

Correct Answer: Option A


Explanation:
Time difference = 6 - (-4) = 10 minutes = 10/60 = 1/6 hours. Let distance be d. d / 5 - d / 6 = 1/6 => d / 30 = 1/6 => d = 5 km.

This question belongs to: Maths Time Speed and Distance
Question #2
A man can row 8 km/h in still water. If the river current flows at 2 km/h, it takes him 3.2 hours to row to a place and back. How far is the place?
A. 12 km
B. 10 km
C. 14 km
D. 15 km

Correct Answer: Option A


Explanation:
Downstream speed = 8 + 2 = 10 km/h. Upstream speed = 8 - 2 = 6 km/h. Let distance be d. d / 10 + d / 6 = 3.2 => 16d / 60 = 3.2 => 16d = 192 => d = 12 km.

This question belongs to: Maths Time Speed and Distance
Question #3
A train 150 meters long passes a platform 250 meters long in 20 seconds. Find the speed of the train in km/h.
A. 72 km/h
B. 64 km/h
C. 84 km/h
D. 80 km/h

Correct Answer: Option A


Explanation:
Total distance = 150 + 250 = 400 meters. Speed = 400 / 20 = 20 m/s. In km/h = 20 * (18/5) = 72 km/h.

This question belongs to: Maths Time Speed and Distance