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.
Akash U. said:
1 decade ago
(Total speed)downstream = Speed of boat + Speed of stream.
Time = Distance/speed.
Time = Distance/speed.
Arun.D said:
1 decade ago
Speed of boat in still water = 13km/hr.
Speed of the stream = 4km/hr.
Time taken by the boat to go 68 km downstream = ?
Speed of boat in downstream = (13+4)km/hr.
= 17km/hr.
Time = distance/speed.
= 68/17hr.
= 4hr.
Speed of the stream = 4km/hr.
Time taken by the boat to go 68 km downstream = ?
Speed of boat in downstream = (13+4)km/hr.
= 17km/hr.
Time = distance/speed.
= 68/17hr.
= 4hr.
Anshu said:
1 decade ago
Total speed during downstream,
Speed = 13kmph + 4 kmph = 17 kmph.
Time = distance / speed = 4 hours.
Hope this helps!
Speed = 13kmph + 4 kmph = 17 kmph.
Time = distance / speed = 4 hours.
Hope this helps!
Geetha said:
1 decade ago
Thanks for your explanation.
Manasa said:
1 decade ago
Thanks Balaji.
Balaji said:
1 decade ago
In the question they given the data that
speed of boat 13 km/hr and speed of stream is 4 km/hr
and they asked us to solve the time taken by the boat in down stream for a distance of 68 kms.
we know as per the formula down stream means speed of boat + speed of stream
therefore,
down stream = 13+4=17 km/hr
as per the problem we got to find time taken by boat to travel a distance of 68km down stream.
we have formula that, time=distance/speed
=68/17
=4 hours
speed of boat 13 km/hr and speed of stream is 4 km/hr
and they asked us to solve the time taken by the boat in down stream for a distance of 68 kms.
we know as per the formula down stream means speed of boat + speed of stream
therefore,
down stream = 13+4=17 km/hr
as per the problem we got to find time taken by boat to travel a distance of 68km down stream.
we have formula that, time=distance/speed
=68/17
=4 hours
(1)
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