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DIRECTIONS: Choose the most appropriate answer:
Q. A steamer moves with a speed of 4.5 km/h in still water to a certain upstream point and comes back to the starting point in a river which flows at 1.5 km/h. The average speed of steamer for the total journey is
- a)12 km/h
- b)9 km/h
- c)6 km/h
- d)4 km/h
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
DIRECTIONS: Choose the most appropriate answer:Q.A steamer moves with ...
Speed of steamer in down stream = 4.5 + 1.5 = 6km
speed of steamer in up stream = 4.5 – 1.5 =3km
let the distance be x.
time taken in down stream = x / 6
time taken in up stream = x / 3
speed of steamer in up stream = 4.5 – 1.5 =3km
let the distance be x.
time taken in down stream = x / 6
time taken in up stream = x / 3
Most Upvoted Answer
DIRECTIONS: Choose the most appropriate answer:Q.A steamer moves with ...
Explanation:
Given Data:
- Speed of steamer in still water = 4.5 km/h
- Speed of river flow = 1.5 km/h
Concept:
- When a steamer moves upstream, its speed relative to the water flow is decreased by the speed of the river.
- When the steamer moves downstream, its speed relative to the water flow is increased by the speed of the river.
Calculations:
- Speed of steamer upstream = 4.5 km/h - 1.5 km/h = 3 km/h
- Speed of steamer downstream = 4.5 km/h + 1.5 km/h = 6 km/h
Average Speed:
- Total distance covered = Distance upstream + Distance downstream
- Let the distance between the two points be D km
- Time taken upstream = D/3 hours
- Time taken downstream = D/6 hours
- Total time for the round trip = D/3 + D/6 = 2D/6 + D/6 = 3D/6 = D/2 hours
- Average speed = Total distance / Total time = 2D / (D/2) = 4 km/h
Therefore, the average speed of the steamer for the total journey is 4 km/h.
Given Data:
- Speed of steamer in still water = 4.5 km/h
- Speed of river flow = 1.5 km/h
Concept:
- When a steamer moves upstream, its speed relative to the water flow is decreased by the speed of the river.
- When the steamer moves downstream, its speed relative to the water flow is increased by the speed of the river.
Calculations:
- Speed of steamer upstream = 4.5 km/h - 1.5 km/h = 3 km/h
- Speed of steamer downstream = 4.5 km/h + 1.5 km/h = 6 km/h
Average Speed:
- Total distance covered = Distance upstream + Distance downstream
- Let the distance between the two points be D km
- Time taken upstream = D/3 hours
- Time taken downstream = D/6 hours
- Total time for the round trip = D/3 + D/6 = 2D/6 + D/6 = 3D/6 = D/2 hours
- Average speed = Total distance / Total time = 2D / (D/2) = 4 km/h
Therefore, the average speed of the steamer for the total journey is 4 km/h.
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DIRECTIONS: Choose the most appropriate answer:Q.A steamer moves with a speed of 4.5 km/h in still water to a certain upstream point and comes back to the starting point in a river which flows at 1.5 km/h. The average speed of steamer for the total journey isa)12 km/hb)9 km/hc)6 km/hd)4 km/hCorrect answer is option 'D'. Can you explain this answer?
Question Description
DIRECTIONS: Choose the most appropriate answer:Q.A steamer moves with a speed of 4.5 km/h in still water to a certain upstream point and comes back to the starting point in a river which flows at 1.5 km/h. The average speed of steamer for the total journey isa)12 km/hb)9 km/hc)6 km/hd)4 km/hCorrect answer is option 'D'. Can you explain this answer? for Defence 2024 is part of Defence preparation. The Question and answers have been prepared according to the Defence exam syllabus. Information about DIRECTIONS: Choose the most appropriate answer:Q.A steamer moves with a speed of 4.5 km/h in still water to a certain upstream point and comes back to the starting point in a river which flows at 1.5 km/h. The average speed of steamer for the total journey isa)12 km/hb)9 km/hc)6 km/hd)4 km/hCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Defence 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for DIRECTIONS: Choose the most appropriate answer:Q.A steamer moves with a speed of 4.5 km/h in still water to a certain upstream point and comes back to the starting point in a river which flows at 1.5 km/h. The average speed of steamer for the total journey isa)12 km/hb)9 km/hc)6 km/hd)4 km/hCorrect answer is option 'D'. Can you explain this answer?.
DIRECTIONS: Choose the most appropriate answer:Q.A steamer moves with a speed of 4.5 km/h in still water to a certain upstream point and comes back to the starting point in a river which flows at 1.5 km/h. The average speed of steamer for the total journey isa)12 km/hb)9 km/hc)6 km/hd)4 km/hCorrect answer is option 'D'. Can you explain this answer? for Defence 2024 is part of Defence preparation. The Question and answers have been prepared according to the Defence exam syllabus. Information about DIRECTIONS: Choose the most appropriate answer:Q.A steamer moves with a speed of 4.5 km/h in still water to a certain upstream point and comes back to the starting point in a river which flows at 1.5 km/h. The average speed of steamer for the total journey isa)12 km/hb)9 km/hc)6 km/hd)4 km/hCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Defence 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for DIRECTIONS: Choose the most appropriate answer:Q.A steamer moves with a speed of 4.5 km/h in still water to a certain upstream point and comes back to the starting point in a river which flows at 1.5 km/h. The average speed of steamer for the total journey isa)12 km/hb)9 km/hc)6 km/hd)4 km/hCorrect answer is option 'D'. Can you explain this answer?.
Solutions for DIRECTIONS: Choose the most appropriate answer:Q.A steamer moves with a speed of 4.5 km/h in still water to a certain upstream point and comes back to the starting point in a river which flows at 1.5 km/h. The average speed of steamer for the total journey isa)12 km/hb)9 km/hc)6 km/hd)4 km/hCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Defence.
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DIRECTIONS: Choose the most appropriate answer:Q.A steamer moves with a speed of 4.5 km/h in still water to a certain upstream point and comes back to the starting point in a river which flows at 1.5 km/h. The average speed of steamer for the total journey isa)12 km/hb)9 km/hc)6 km/hd)4 km/hCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for DIRECTIONS: Choose the most appropriate answer:Q.A steamer moves with a speed of 4.5 km/h in still water to a certain upstream point and comes back to the starting point in a river which flows at 1.5 km/h. The average speed of steamer for the total journey isa)12 km/hb)9 km/hc)6 km/hd)4 km/hCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of DIRECTIONS: Choose the most appropriate answer:Q.A steamer moves with a speed of 4.5 km/h in still water to a certain upstream point and comes back to the starting point in a river which flows at 1.5 km/h. The average speed of steamer for the total journey isa)12 km/hb)9 km/hc)6 km/hd)4 km/hCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
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