A person runs around a circular track of circumference 500 meters. If his speed is 18 km/h, how many rounds can he complete in 10 minutes? MCQ with Answer and Explanation

Question

A person runs around a circular track of circumference 500 meters. If his speed is 18 km/h, how many rounds can he complete in 10 minutes?

A. 8 rounds

B. 5 rounds

C. 7 rounds

D. 6 rounds

Answer: Option D

Solution (By JKSSB Mock Tests)

Speed = 18 km/h = 5 m/s. Time = 10 minutes = 600 seconds. Total distance = 5 * 600 = 3000 meters. Number of rounds = 3000 / 500 = 6 rounds.

This question belongs to: Maths Time Speed and Distance

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Question #1

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A delivery coach covers a path of 210 km in 3 hours 30 minutes. What should be its speed to wrap the same distance in exactly 3 hours?

A. 80 km/h

B. 65 km/h

C. 75 km/h

D. 70 km/h

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Correct Answer: Option D

Explanation:
Required speed = Distance / Time = 210 / 3 = 70 km/h.

This question belongs to: Maths Time Speed and Distance

Question #2

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A sonic pulse registers a speed of 340 m/s. How many seconds will it take to span a straight distance line of 8.5 km?

A. 30 seconds

B. 28 seconds

C. 25 seconds

D. 22 seconds

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Correct Answer: Option C

Explanation:
Distance = 8.5 km = 8500 meters. Time taken = 8500 / 340 = 25 seconds.

This question belongs to: Maths Time Speed and Distance

Question #3

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A man can row 8 km/h in still water. He takes 4 hours to row to a point and back when the current flows at 4 km/h. How far is the point?

A. 14 km

B. 12 km

C. 16 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

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