A train 110 meters long passes a platform 190 meters long in 20 seconds flat. Find the speed of the train in km/h. MCQ with Answer and Explanation

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A train 110 meters long passes a platform 190 meters long in 20 seconds flat. Find the speed of the train in km/h.

A. 64 km/h

B. 60 km/h

C. 48 km/h

D. 54 km/h

Answer: Option D

Solution (By JKSSB Mock Tests)

Total distance = 110 + 190 = 300 meters. Speed = 300 / 20 = 15 m/s. In km/h = 15 * (18/5) = 54 km/h.

This question belongs to: Maths Time Speed and Distance

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Question #1

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A runner tracks a circular field of circumference 600 meters. If his speed is 14.4 km/h, how many rounds can he complete in 15 minutes?

A. 7 rounds

B. 5 rounds

C. 8 rounds

D. 6 rounds

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Correct Answer: Option D

Explanation:
Speed = 14.4 km/h = 14.4 * (5/18) = 4 m/s. Time = 15 minutes = 900 seconds. Total distance wrapped = 4 * 900 = 3600 meters. Number of rounds completed = 3600 / 600 = 6 rounds.

This question belongs to: Maths Time Speed and Distance

Question #2

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Excluding stoppages, the speed of a train is 72 km/h and including stoppages it is 60 km/h. How many minutes does the train stop per hour?

A. 12 minutes

B. 15 minutes

C. 8 minutes

D. 10 minutes

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Correct Answer: Option D

Explanation:
Stoppage time per hour = (72 - 60) / 72 = 12 / 72 = 1/6 hour. In minutes = (1/6) * 60 = 10 minutes.

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Question #3

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A train 160 meters long passes a static utility pole in 8 seconds. Find the time it takes to completely pass a platform of length 240 meters.

A. 22 seconds

B. 24 seconds

C. 18 seconds

D. 20 seconds

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Correct Answer: Option D

Explanation:
Speed of train = 160 / 8 = 20 m/s. Total distance to pass platform = 160 + 240 = 400 meters. Time taken = 400 / 20 = 20 seconds.

This question belongs to: Maths Time Speed and Distance

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