A person runs a distance of 1200 meters along a straight road in 4 minutes. What is his speed in km/h? MCQ with Answer and Explanation

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A person runs a distance of 1200 meters along a straight road in 4 minutes. What is his speed in km/h?

A. 20 km/h

B. 18 km/h

C. 24 km/h

D. 15 km/h

Answer: Option B

Solution (By JKExamLibrary)

Time = 4 minutes = 240 seconds. Speed = 1200 / 240 = 5 m/s. Speed in km/h = 5 * (18/5) = 18 km/h.

This question belongs to: Maths Time Speed and Distance

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Question #1

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A person can row 8 km/h in still water. If the river current flows at 4 km/h, it takes him 4 hours to row to an outpost and back. Find the distance of the outpost.

A. 16 km

B. 12 km

C. 14 km

D. 10 km

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Correct Answer: Option B

Explanation:
Downstream speed = 8 + 4 = 12 km/h. Upstream speed = 8 - 4 = 4 km/h. Let distance be d. d / 12 + d / 4 = 4 => 4d / 12 = 4 => d = 12 km.

This question belongs to: Maths Time Speed and Distance