Aptitude - Boats and Streams - Discussion
Discussion Forum : Boats and Streams - General Questions (Q.No. 15)
15.
A man rows to a place 48 km distant and come back in 14 hours. He finds that he can row 4 km with the stream in the same time as 3 km against the stream. The rate of the stream is:
Answer: Option
Explanation:
Suppose he move 4 km downstream in x hours. Then,
| Speed downstream = |  |
4 |  |
km/hr. |
| x |
| Speed upstream = | |
3 | |
km/hr. |
| x |
 |
48 | + | 48 | = 14 or x = | 1 | . |
| (4/x) | (3/x) | 2 |
So, Speed downstream = 8 km/hr, Speed upstream = 6 km/hr.
| Rate of the stream = | 1 | (8 - 6) km/hr = 1 km/hr. |
| 2 |
Discussion:
48 comments Page 5 of 5.
Usamah said:
1 decade ago
Explain me last step. 1/2(8-6) = 1 km/hr which is rate of stream.
Chirag gupta said:
1 decade ago
Why we divide this by x?
I think answer should be 2 km/hr.
I think answer should be 2 km/hr.
Rohit said:
1 decade ago
Is there any other solotion without assuming the x ?
Rrr said:
4 years ago
Why 8-6 and why not 8+6 is taken? Explain please.
(3)
Ram said:
1 decade ago
I'm also having this doubt. Anybody help me.
Nessa said:
9 years ago
How did you get x = 1/2? I got it as 2.
Pouvanam said:
9 years ago
How do you find the value of x?
Nikalus said:
1 year ago
Thank you all for explanation
(1)
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