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:
42 comments Page 1 of 5.
Nikita said:
6 days ago
Relative speed = B + w = 15km/hr.
T = D/Relative speed,
T = 68/15=4hours.
T = D/Relative speed,
T = 68/15=4hours.
Ammu S said:
1 year ago
thank you everyone for the explanation.
(9)
Madhu said:
1 year ago
Speed(s) = boat speed(u) + stream speed(v) = 13 + 4 = 17km/h and distance = 68km;
We know that speed = distance/time.
But we have to find the time then,
Time = distance/speed.
Time = 68/17 = 4 hours.
We know that speed = distance/time.
But we have to find the time then,
Time = distance/speed.
Time = 68/17 = 4 hours.
(14)
Dharmendra said:
1 year ago
In this question, we have seen boat and steam both speeds are in one side so we have to include both speeds [13+4]=17 and distance is 68.
So, 68÷17 = 4hour.
So, 68÷17 = 4hour.
(4)
Hunde Namomsa said:
2 years ago
Thanks everyone for explaining the answer.
(3)
Tanisha said:
3 years ago
Thanks @Srikant.
(2)
Hanumanthu vinayakarao said:
4 years ago
Distance = speed / time.
Then time = distace/ speed.
Speed = boat speed+stream speed.
Speed = 13+4=17 distance = 68.
D = 68/17 = 4hrs.
Then time = distace/ speed.
Speed = boat speed+stream speed.
Speed = 13+4=17 distance = 68.
D = 68/17 = 4hrs.
(2)
Bhushan roy said:
4 years ago
Thanks for the nice explanation.
Venky said:
4 years ago
Thanks to all for giving an explanation.
MD ABDUL KHABIR said:
4 years ago
Thank you all for explaining it clearly.
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