Aptitude - Boats and Streams - Discussion
Discussion Forum : Boats and Streams - General Questions (Q.No. 13)
13.
Speed of a boat in standing water is 9 kmph and the speed of the stream is 1.5 kmph. A man rows to a place at a distance of 105 km and comes back to the starting point. The total time taken by him is:
Answer: Option
Explanation:
Speed upstream = 7.5 kmph.
Speed downstream = 10.5 kmph.
 Total time taken = |
 |
105 | + | 105 |  hours = 24 hours. |
| 7.5 | 10.5 |
Discussion:
24 comments Page 3 of 3.
Kau said:
1 decade ago
You are wrong Bhavana, you have written opposite.
Bhavana said:
1 decade ago
Speed upstream is 9+1.5 and downstream is 9-1.5.
I think generally in stream sums we should calculate first the upstream and the downstream values.
I think generally in stream sums we should calculate first the upstream and the downstream values.
Bhavana said:
1 decade ago
How do you calculate upstream and downstream speed?
Ramya said:
1 decade ago
How do you arrive at upstream and down stream speed.
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