Aptitude - Boats and Streams - Discussion
Discussion Forum : Boats and Streams - General Questions (Q.No. 5)
5.
In one hour, a boat goes 11 km/hr along the stream and 5 km/hr against the stream. The speed of the boat in still water (in km/hr) is:
Answer: Option
Explanation:
Discussion:
39 comments Page 3 of 4.
Bhavesh said:
8 years ago
What is this same Q is like in 3 hours a boat goes 11 km along the stream and 5 km against the stream the speed of the boat in still water is?
(1)
Suresh said:
9 years ago
A boats cover 1 km in 10 minute with stream and 1 km in 20 minute against stream now speed of boat in still water will be?
Please solve it.
Please solve it.
Darkele said:
7 years ago
Note, there is no use of the 1 hour given because the upstream and downstream is sufficient to get the speed of the boat in still water.
(3)
HARI said:
7 years ago
For finding the speed of the boat in still water = (upstream-downstream/2).
For finding water speed = (upstream+downstream/2).
For finding water speed = (upstream+downstream/2).
(7)
Nikul rana said:
1 decade ago
Speed downstream = X+Y = 11 kmph;
Speed upstream = X-Y = 5 kmph;
Speed of the still water = (X+Y)+(X-Y)*1/2 = 8 kmph.
Speed upstream = X-Y = 5 kmph;
Speed of the still water = (X+Y)+(X-Y)*1/2 = 8 kmph.
Shudhu said:
9 years ago
Downstream so, x + y = 11.
Upstream so, x - y = 5.
Solve equation 1 and 2.
You get x =7.5.
So, nearest answer is 8.
Upstream so, x - y = 5.
Solve equation 1 and 2.
You get x =7.5.
So, nearest answer is 8.
Ayan said:
10 years ago
The question is not clear. It says in one hour both travel upstream as well as downstream. How is it explain me?
Yamini said:
8 years ago
If the speed downstream is a km/hr and speed upstream is b km/hr then,
Speed in still water=1/2(a+b)km/hr.
Speed in still water=1/2(a+b)km/hr.
(1)
Kamala kant said:
8 years ago
Do you have the concept of eqillibrium? then say
if , (11/x +y) + (5/x-y) =3,
x=?
if , (11/x +y) + (5/x-y) =3,
x=?
Brinda Iyer said:
1 decade ago
But if in the same question distance traveled is asked, then what is the formula?
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