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 2 of 5.
WAngdeep Tamang said:
1 decade ago
Speed in Still water = 13 km/h.
Speed of the stream = 4 km/h.
Downstream = 13+4 = 17km (speed in Still water + speed of the stream).
Time Take = 68/17 = 4 hrs.
Speed of the stream = 4 km/h.
Downstream = 13+4 = 17km (speed in Still water + speed of the stream).
Time Take = 68/17 = 4 hrs.
Dharmendra said:
3 years 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.
(6)
Hanumanthu vinayakarao said:
6 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.
(7)
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!
Manikyam said:
1 decade ago
How to know particularly which formula to use whether downstream or upstream? Bit confusing?
V!cky said:
10 years ago
Use Speed = Distance /Time formula.
Still in water u+v = 13+4 = 17.
68/17 = 4 km/hr.
Still in water u+v = 13+4 = 17.
68/17 = 4 km/hr.
ROSHAN said:
10 years ago
Still water speed + Boat speed = Total speed (down stream).
Time = Distance/Speed.
Time = Distance/Speed.
Akash U. said:
1 decade ago
(Total speed)downstream = Speed of boat + Speed of stream.
Time = Distance/speed.
Time = Distance/speed.
T dhinesh said:
1 year ago
13 km/hr
4 km/hr
= 13 + 4 = 17km/hr.
Downstream = 68 km.
= 68/17.
= 4hours.
4 km/hr
= 13 + 4 = 17km/hr.
Downstream = 68 km.
= 68/17.
= 4hours.
(1)
GauravBagul said:
7 years ago
13+4 = 17km/hr,
For 1 hour he goes 17 km.
Then for 68 km he takes 4 hrs.
For 1 hour he goes 17 km.
Then for 68 km he takes 4 hrs.
(2)
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