A train 160 meters long tracks at a speed of 90 km/h. How long will it take to cross a platform 240 meters long? MCQ with Answer and Explanation

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A train 160 meters long tracks at a speed of 90 km/h. How long will it take to cross a platform 240 meters long?

A. 14 seconds

B. 20 seconds

C. 16 seconds

D. 18 seconds

Answer: Option C

Solution (By JKSSB Mock Tests)

Speed of train = 90 * (5/18) = 25 m/s. Total distance = 160 + 240 = 400 meters. Time taken = 400 / 25 = 16 seconds.

This question belongs to: Maths Time Speed and Distance

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Question #1

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A train 180 meters long running at 54 km/h passes a stationary point tracking observer. Find the time parameter required to cross.

A. 10 seconds

B. 12 seconds

C. 14 seconds

D. 16 seconds

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Correct Answer: Option B

Explanation:
Speed of train = 54 * (5/18) = 15 m/s. Time taken = 180 / 15 = 12 seconds.

This question belongs to: Maths Time Speed and Distance

Question #2

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A train 110 meters long is traveling at 60 km/h. How much time will it take to pass a platform 240 meters long?

A. 24 seconds

B. 27 seconds

C. 21 seconds

D. 18 seconds

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Correct Answer: Option C

Explanation:
Total distance = 110 + 240 = 350 meters. Speed = 60 * (5/18) = 50/3 m/s. Time = 350 / (50/3) = 350 * 3 / 50 = 7 * 3 = 21 seconds.

This question belongs to: Maths Time Speed and Distance

Question #3

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A passenger train 100 meters long clears a line worker tracking on the ballast track in 5 seconds flat when both move along the identical direction. If the line worker walks at 8 km/h, find the train speed.

A. 76 km/h

B. 84 km/h

C. 80 km/h

D. 88 km/h

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Correct Answer: Option C

Explanation:
Relative tracking speed = 100 / 5 = 20 m/s = 20 * (18/5) = 72 km/h. In identical directions, Relative Speed = Speed of train - Speed of worker => 72 = Speed of train - 8 => Speed of train = 80 km/h.

This question belongs to: Maths Time Speed and Distance

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