Aptitude - Boats and Streams - Discussion
Discussion Forum : Boats and Streams - General Questions (Q.No. 1)
1.
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 68 km downstream.
Answer: Option
Explanation:
Speed downstream = (13 + 4) km/hr = 17 km/hr.
| Time taken to travel 68 km downstream = |  |
68 |  hrs = 4 hrs. |
| 17 |
Discussion:
46 comments Page 5 of 5.
Csharad said:
9 years ago
Here any short cut method for this?
Kiruthika said:
9 years ago
Given:
Speed in still water U = 13 km/hr,
Speed of stream V = 4 km/hr,
Distance = 68 km,
Time = ?
Solution:
Time = distance / U+V(downstream speed)
=> 68/17,
=> 4 hour.
Speed in still water U = 13 km/hr,
Speed of stream V = 4 km/hr,
Distance = 68 km,
Time = ?
Solution:
Time = distance / U+V(downstream speed)
=> 68/17,
=> 4 hour.
Sivananda said:
9 years ago
Super explanation @Balaji. Thanks.
Avijit das said:
9 years ago
Appropriate explanation, Thanks to all.
HONEY said:
9 years ago
Good explanation, Thanks to all.
Gaurank Verma said:
9 years ago
Since ship is going downstream,
Hence,
Resultant speed = 13 + 4 = 17 km/h.
Now,
Time = distance / speed.
==> Time = 68/17 = 4hours.
Therefore, the boat will take 4 hrs. To go 68 km downstream.
Hence,
Resultant speed = 13 + 4 = 17 km/h.
Now,
Time = distance / speed.
==> Time = 68/17 = 4hours.
Therefore, the boat will take 4 hrs. To go 68 km downstream.
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