LR Exam > LR Questions > A jogger is running at 9 kmph alongside a rai...
Start Learning for Free
A jogger is running at 9 kmph alongside a railway track in 240 meters ahead of the engine of a 120 meters long train . The train is running at 45 kmph in the same direction. how much time does it take for the train to pass the jogger?
- a)46
- b)36
- c)18
- d)22
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
A jogger is running at 9 kmph alongside a railway track in 240 meters ...
Speed of train relative to jogger = (45 - 9) km/hr = 36 km/hr.
= (36 x 5/18)m/sec
= 10 m/sec.
Distance to be covered = (240 + 120) m = 360 m.
Time taken = 360/10
= 36 sec.
= (36 x 5/18)m/sec
= 10 m/sec.
Distance to be covered = (240 + 120) m = 360 m.
Time taken = 360/10
= 36 sec.
Free Test
FREE
| Start Free Test |
Community Answer
A jogger is running at 9 kmph alongside a railway track in 240 meters ...
To solve this problem, we need to find the time it takes for the train to pass the jogger. We can do this by calculating the time it takes for the train to cover the distance between the jogger and itself.
Given data:
- Speed of the jogger = 9 km/h
- Speed of the train = 45 km/h
- Distance between the jogger and the engine of the train = 240 meters
- Length of the train = 120 meters
Finding the relative speed:
Since the jogger and the train are moving in the same direction, we need to find the relative speed between them. We can do this by subtracting the speed of the jogger from the speed of the train.
Relative speed = Speed of the train - Speed of the jogger
Relative speed = 45 km/h - 9 km/h
Relative speed = 36 km/h
Converting the relative speed to meters per second:
To make the units consistent, we convert the relative speed from km/h to m/s.
Relative speed = 36 km/h * (1000 m/1 km) * (1 h/3600 s)
Relative speed = 10 m/s
Finding the time it takes for the train to cover the distance:
To find the time it takes for the train to cover the distance between the jogger and itself, we divide the distance by the relative speed.
Time = Distance / Relative speed
Time = (240 m + 120 m) / 10 m/s
Time = 360 m / 10 m/s
Time = 36 s
Therefore, it takes 36 seconds for the train to pass the jogger. Hence, the correct answer is option B.
Given data:
- Speed of the jogger = 9 km/h
- Speed of the train = 45 km/h
- Distance between the jogger and the engine of the train = 240 meters
- Length of the train = 120 meters
Finding the relative speed:
Since the jogger and the train are moving in the same direction, we need to find the relative speed between them. We can do this by subtracting the speed of the jogger from the speed of the train.
Relative speed = Speed of the train - Speed of the jogger
Relative speed = 45 km/h - 9 km/h
Relative speed = 36 km/h
Converting the relative speed to meters per second:
To make the units consistent, we convert the relative speed from km/h to m/s.
Relative speed = 36 km/h * (1000 m/1 km) * (1 h/3600 s)
Relative speed = 10 m/s
Finding the time it takes for the train to cover the distance:
To find the time it takes for the train to cover the distance between the jogger and itself, we divide the distance by the relative speed.
Time = Distance / Relative speed
Time = (240 m + 120 m) / 10 m/s
Time = 360 m / 10 m/s
Time = 36 s
Therefore, it takes 36 seconds for the train to pass the jogger. Hence, the correct answer is option B.
|
Explore Courses for LR exam
|
|
Similar LR Doubts
A jogger is running at 9 kmph alongside a railway track in 240 meters ahead of the engine of a 120 meters long train . The train is running at 45 kmph in the same direction. how much time does it take for the train to pass the jogger?a)46b)36c)18d)22Correct answer is option 'B'. Can you explain this answer?
Question Description
A jogger is running at 9 kmph alongside a railway track in 240 meters ahead of the engine of a 120 meters long train . The train is running at 45 kmph in the same direction. how much time does it take for the train to pass the jogger?a)46b)36c)18d)22Correct answer is option 'B'. Can you explain this answer? for LR 2025 is part of LR preparation. The Question and answers have been prepared according to the LR exam syllabus. Information about A jogger is running at 9 kmph alongside a railway track in 240 meters ahead of the engine of a 120 meters long train . The train is running at 45 kmph in the same direction. how much time does it take for the train to pass the jogger?a)46b)36c)18d)22Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for LR 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A jogger is running at 9 kmph alongside a railway track in 240 meters ahead of the engine of a 120 meters long train . The train is running at 45 kmph in the same direction. how much time does it take for the train to pass the jogger?a)46b)36c)18d)22Correct answer is option 'B'. Can you explain this answer?.
A jogger is running at 9 kmph alongside a railway track in 240 meters ahead of the engine of a 120 meters long train . The train is running at 45 kmph in the same direction. how much time does it take for the train to pass the jogger?a)46b)36c)18d)22Correct answer is option 'B'. Can you explain this answer? for LR 2025 is part of LR preparation. The Question and answers have been prepared according to the LR exam syllabus. Information about A jogger is running at 9 kmph alongside a railway track in 240 meters ahead of the engine of a 120 meters long train . The train is running at 45 kmph in the same direction. how much time does it take for the train to pass the jogger?a)46b)36c)18d)22Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for LR 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A jogger is running at 9 kmph alongside a railway track in 240 meters ahead of the engine of a 120 meters long train . The train is running at 45 kmph in the same direction. how much time does it take for the train to pass the jogger?a)46b)36c)18d)22Correct answer is option 'B'. Can you explain this answer?.
Solutions for A jogger is running at 9 kmph alongside a railway track in 240 meters ahead of the engine of a 120 meters long train . The train is running at 45 kmph in the same direction. how much time does it take for the train to pass the jogger?a)46b)36c)18d)22Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for LR.
Download more important topics, notes, lectures and mock test series for LR Exam by signing up for free.
Here you can find the meaning of A jogger is running at 9 kmph alongside a railway track in 240 meters ahead of the engine of a 120 meters long train . The train is running at 45 kmph in the same direction. how much time does it take for the train to pass the jogger?a)46b)36c)18d)22Correct answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
A jogger is running at 9 kmph alongside a railway track in 240 meters ahead of the engine of a 120 meters long train . The train is running at 45 kmph in the same direction. how much time does it take for the train to pass the jogger?a)46b)36c)18d)22Correct answer is option 'B'. Can you explain this answer?, a detailed solution for A jogger is running at 9 kmph alongside a railway track in 240 meters ahead of the engine of a 120 meters long train . The train is running at 45 kmph in the same direction. how much time does it take for the train to pass the jogger?a)46b)36c)18d)22Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of A jogger is running at 9 kmph alongside a railway track in 240 meters ahead of the engine of a 120 meters long train . The train is running at 45 kmph in the same direction. how much time does it take for the train to pass the jogger?a)46b)36c)18d)22Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice A jogger is running at 9 kmph alongside a railway track in 240 meters ahead of the engine of a 120 meters long train . The train is running at 45 kmph in the same direction. how much time does it take for the train to pass the jogger?a)46b)36c)18d)22Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice LR tests.
|
|
Explore Courses for LR exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup