A train 120 meters long running at 54 km/h passes a standing pedestrian. Find the time taken to cross. MCQ with Answer and Explanation

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A train 120 meters long running at 54 km/h passes a standing pedestrian. Find the time taken to cross.

A. 7 seconds

B. 8 seconds

C. 10 seconds

D. 9 seconds

Answer: Option B

Solution (By JKSSB Mock Tests)

Speed of train = 54 * (5/18) = 15 m/s. Time taken = 120 / 15 = 8 seconds.

This question belongs to: Maths Time Speed and Distance

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Question #1

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A passenger train clears a station side signal pillar in exactly 12 seconds. If the length of the train is 180 meters, find its speed in km/h.

A. 54 km/h

B. 48 km/h

C. 60 km/h

D. 72 km/h

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Correct Answer: Option A

Explanation:
Speed of train = 180 / 12 = 15 m/s. Converting to km/h = 15 * (18/5) = 54 km/h.

This question belongs to: Maths Time Speed and Distance

Question #2

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A sound wave tracking along a canyon paths at 340 m/s. Find the total distance wrapped by the sound wave in exactly 25 seconds.

A. 9.5 km

B. 7.5 km

C. 8.5 km

D. 9.0 km

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Correct Answer: Option C

Explanation:
Distance covered = Speed * Time = 340 * 25 = 8500 meters = 8.5 km.

This question belongs to: Maths Time Speed and Distance

Question #3

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A swimmer can traverse 36 km downstream in 3 hours and covers 12 km upstream in 3 hours. Find the swimmer's baseline speed in still water.

A. 8 km/h

B. 9 km/h

C. 7 km/h

D. 10 km/h

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Correct Answer: Option A

Explanation:
Downstream speed = 36 / 3 = 12 km/h. Upstream speed = 12 / 3 = 4 km/h. Speed in still water = (12 + 4) / 2 = 16 / 2 = 8 km/h.

This question belongs to: Maths Time Speed and Distance

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