A train 200 meters long covers a telegraph post in 10 seconds. Find the time it takes to cover a bridge of 300 meters. MCQ with Answer and Explanation

Question
A train 200 meters long covers a telegraph post in 10 seconds. Find the time it takes to cover a bridge of 300 meters.
A. 25 seconds
B. 20 seconds
C. 15 seconds
D. 30 seconds
Answer: Option A
Solution (By JKSSB Mock Tests)
Speed of train = 200 / 10 = 20 m/s. Total distance to cross bridge = 200 + 300 = 500 meters. Time = 500 / 20 = 25 seconds.
This question belongs to: Maths Time Speed and Distance
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Practice More Time Speed and Distance Questions

Question #1
Walking at 7/9 of his baseline typical speed, a courier agent reaches his office terminal 12 minutes late. Find his typical baseline time parameter.
A. 38 minutes
B. 42 minutes
C. 46 minutes
D. 50 minutes
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Correct Answer: Option B

Explanation:
New speed = 7/9 of usual speed => New time = 9/7 of usual time. Difference = 2/7 of usual time = 12 minutes. 1/7 of usual time = 6 minutes => Usual time = 42 minutes.
This question belongs to: Maths Time Speed and Distance
Question #2
A motorboat covers 16 km downstream in 1 hour and covers the same distance upstream in 2 hours. Find the speed of the boat in still water.
A. 12 km/h
B. 10 km/h
C. 15 km/h
D. 14 km/h
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Correct Answer: Option A

Explanation:
Downstream speed = 16 / 1 = 16 km/h. Upstream speed = 16 / 2 = 8 km/h. Speed in still water = (16 + 8) / 2 = 12 km/h.
This question belongs to: Maths Time Speed and Distance
Question #3
A train 100 meters long running at 54 km/h passes a standing pedestrian. Find the time taken to cross.
A. 8.0 seconds
B. 6.66 seconds
C. 6.0 seconds
D. 7.2 seconds
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Correct Answer: Option B

Explanation:
Speed of train = 54 * (5/18) = 15 m/s. Time taken = 100 / 15 = 6.66 seconds.
This question belongs to: Maths Time Speed and Distance
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