Aptitude - Boats and Streams - Discussion
Discussion Forum : Boats and Streams - General Questions (Q.No. 9)
9.
A man can row at 5 kmph in still water. If the velocity of current is 1 kmph and it takes him 1 hour to row to a place and come back, how far is the place?
Answer: Option
Explanation:
Speed downstream = (5 + 1) kmph = 6 kmph.
Speed upstream = (5 - 1) kmph = 4 kmph.
Let the required distance be x km.
| Then, | x | + | x | = 1 |
| 6 | 4 |
2x + 3x = 12
5x = 12
x = 2.4 km.
Discussion:
21 comments Page 3 of 3.
Sasikumar said:
1 decade ago
Speed downstream = (5 + 1) kmph = 6 kmph.
Speed upstream = (5 - 1) kmph = 4 kmph.
average speed=2(6)(4)/(6+4)
Speed upstream = (5 - 1) kmph = 4 kmph.
average speed=2(6)(4)/(6+4)
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