A train 100 meters long passes a static observer in 5 seconds. How long will it take to pass a platform 260 meters long? MCQ with Answer and Explanation

Question

A train 100 meters long passes a static observer in 5 seconds. How long will it take to pass a platform 260 meters long?

A. 16 seconds

B. 18 seconds

C. 20 seconds

D. 22 seconds

Answer: Option B

Solution (By JKSSB Mock Tests)

Speed of train = 100 / 5 = 20 m/s. Total distance to pass platform = 100 + 260 = 360 meters. Time taken = 360 / 20 = 18 seconds.

This question belongs to: Maths Time Speed and Distance

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Question #1

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A local train spans a track sector in 40 minutes. If its speed is lowered by 6 km/h, it tracks the same sector in 45 minutes. Find the distance of this track sector.

A. 40 km

B. 36 km

C. 32 km

D. 44 km

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Correct Answer: Option B

Explanation:
Let original speed be s. s * (40/60) = (s - 6) * (45/60) => 40s = 45s - 270 => 5s = 270 => s = 54 km/h. Distance = 54 * (40/60) = 36 km.

This question belongs to: Maths Time Speed and Distance

Question #2

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A train passes a 110-meter long bridge in 12 seconds and a standard sign post in 7 seconds. Find the length of the train.

A. 175 meters

B. 154 meters

C. 140 meters

D. 160 meters

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Correct Answer: Option B

Explanation:
Time taken to cross the bridge alone = 12 - 7 = 5 seconds. Speed of train = 110 / 5 = 22 m/s. Length of train = Speed * Time to cross sign post = 22 * 7 = 154 meters.

This question belongs to: Maths Time Speed and Distance