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A boat can travel with a speed of 13 km/hr in still water. If the speed of the stream is 4 km/hr, find the time taken by the boat to go 51 km downstream.
- a)2 hours
- b)3 hours
- c)4 hours
- d)5 hours
- e)None of these
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
A boat can travel with a speed of 13 km/hr in still water. If the spee...
Learn the concept first— still water & stream are completely opposite conditions of water. Downstream, is if a boat moves in the same direction of the stream.
Accdn,to The basic 10th level formulae, speed of the boat downstream–
speed in still water+ speed in stream.
= 13km/hr + 4km/hr = 17 km/ hr.
hence,time to go 51 km, 51/17= 3 hrs
Accdn,to The basic 10th level formulae, speed of the boat downstream–
speed in still water+ speed in stream.
= 13km/hr + 4km/hr = 17 km/ hr.
hence,time to go 51 km, 51/17= 3 hrs
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A boat can travel with a speed of 13 km/hr in still water. If the spee...
Problem: To find the time taken by the boat to go 51 km downstream with a speed of 13 km/hr in still water and the speed of the stream is 4 km/hr.
Solution:
Let us assume that the time taken by the boat to go 51 km downstream is t.
The speed of the boat downstream = (speed of the boat in still water) + (speed of the stream)
= 13 + 4 = 17 km/hr
Therefore, the distance travelled by the boat downstream in time t = speed × time
= 17 × t km
According to the problem, the boat travelled 51 km downstream.
Therefore, 17 × t = 51
=> t = 51/17
=> t = 3
Hence, the time taken by the boat to go 51 km downstream is 3 hours.
Therefore, the correct option is (b) 3 hours.
Solution:
Let us assume that the time taken by the boat to go 51 km downstream is t.
The speed of the boat downstream = (speed of the boat in still water) + (speed of the stream)
= 13 + 4 = 17 km/hr
Therefore, the distance travelled by the boat downstream in time t = speed × time
= 17 × t km
According to the problem, the boat travelled 51 km downstream.
Therefore, 17 × t = 51
=> t = 51/17
=> t = 3
Hence, the time taken by the boat to go 51 km downstream is 3 hours.
Therefore, the correct option is (b) 3 hours.
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A boat can travel with a speed of 13 km/hr in still water. If the speed of the stream is 4 km/hr, find the time taken by the boat to go 51 km downstream.a)2 hoursb)3 hoursc)4 hoursd)5 hourse)None of theseCorrect answer is option 'B'. Can you explain this answer?
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A boat can travel with a speed of 13 km/hr in still water. If the speed of the stream is 4 km/hr, find the time taken by the boat to go 51 km downstream.a)2 hoursb)3 hoursc)4 hoursd)5 hourse)None of theseCorrect answer is option 'B'. Can you explain this answer? for Quant 2024 is part of Quant preparation. The Question and answers have been prepared according to the Quant exam syllabus. Information about A boat can travel with a speed of 13 km/hr in still water. If the speed of the stream is 4 km/hr, find the time taken by the boat to go 51 km downstream.a)2 hoursb)3 hoursc)4 hoursd)5 hourse)None of theseCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Quant 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A boat can travel with a speed of 13 km/hr in still water. If the speed of the stream is 4 km/hr, find the time taken by the boat to go 51 km downstream.a)2 hoursb)3 hoursc)4 hoursd)5 hourse)None of theseCorrect answer is option 'B'. Can you explain this answer?.
A boat can travel with a speed of 13 km/hr in still water. If the speed of the stream is 4 km/hr, find the time taken by the boat to go 51 km downstream.a)2 hoursb)3 hoursc)4 hoursd)5 hourse)None of theseCorrect answer is option 'B'. Can you explain this answer? for Quant 2024 is part of Quant preparation. The Question and answers have been prepared according to the Quant exam syllabus. Information about A boat can travel with a speed of 13 km/hr in still water. If the speed of the stream is 4 km/hr, find the time taken by the boat to go 51 km downstream.a)2 hoursb)3 hoursc)4 hoursd)5 hourse)None of theseCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Quant 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A boat can travel with a speed of 13 km/hr in still water. If the speed of the stream is 4 km/hr, find the time taken by the boat to go 51 km downstream.a)2 hoursb)3 hoursc)4 hoursd)5 hourse)None of theseCorrect answer is option 'B'. Can you explain this answer?.
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