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 4 of 4.
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.
Naresh said:
1 decade ago
Given that,
Speed in the downstream (d) = 11 km/hr.
Speed in the upstream (u) = 5 km/hr.
Speed of the Boat in still water = d + u/2.
=> 11 + 5/2 = 16/2.
=> 8 km/hr.
Speed in the downstream (d) = 11 km/hr.
Speed in the upstream (u) = 5 km/hr.
Speed of the Boat in still water = d + u/2.
=> 11 + 5/2 = 16/2.
=> 8 km/hr.
Ramachandran said:
1 decade ago
Hello guys how would you find:
11 km/hr is Downstream.
5 km/hr is Upstream.
11 km/hr is Downstream.
5 km/hr is Upstream.
Suchita said:
1 decade ago
Because in question they have mentioned speed of boat along the stream (i.e downstream) is 11km/hr and against the stream (i.e upstream) is 5km/hr.
Nikul rana said:
10 years 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.
Priya said:
10 years ago
What is this? Am not clear, I am late pick up person, say clearly guys.
Nija said:
10 years ago
In this question, it is not mentioned whether 1 hour each taken by downstream and upstream. So how can we solve this questions ? Please am confused.
Ayan said:
9 years ago
The question is not clear. It says in one hour both travel upstream as well as downstream. How is it explain me?
Ashok said:
1 decade ago
From where do this 1/2 came from?
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers