A train 150 meters long completely passes a stone in 15 seconds. Find the speed of the train in km/h. MCQ with Answer and Explanation

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A train 150 meters long completely passes a stone in 15 seconds. Find the speed of the train in km/h.

A. 40 km/h

B. 36 km/h

C. 45 km/h

D. 30 km/h

Answer: Option B

Solution (By JKSSB Mock Tests)

Speed of train = 150 / 15 = 10 m/s. In km/h = 10 * (18/5) = 36 km/h.

This question belongs to: Maths Time Speed and Distance

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Question #1

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A train 140 meters long passes a stationary observer in 7 seconds. How long will it take to cross a platform 260 meters long?

A. 18 seconds

B. 20 seconds

C. 24 seconds

D. 22 seconds

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Correct Answer: Option B

Explanation:
Speed of train = 140 / 7 = 20 m/s. Total distance to pass platform = 140 + 260 = 400 meters. Time required = 400 / 20 = 20 seconds.

This question belongs to: Maths Time Speed and Distance

Question #2

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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. 16 seconds

B. 14 seconds

C. 12 seconds

D. 10 seconds

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Correct Answer: Option C

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 #3

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A person can row 10 km/h in still water. If the speed of the river current is 3 km/h, find the time taken to row 28 km upstream.

A. 6 hours

B. 4 hours

C. 5 hours

D. 3 hours

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Correct Answer: Option B

Explanation:
Upstream speed = 10 - 3 = 7 km/h. Time taken = 28 / 7 = 4 hours.

This question belongs to: Maths Time Speed and Distance

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