Quantitative Aptitude – Boats and Streams
“Boats and Streams” is very important topic in competitive exams. Banking aptitude exams, Rail exams, PSC’s, SSC’s and almost all competitive exams have aptitude paper and all of them must have at least one question from boats and streams chapter. So this is very important chapter to learn for the exam.
So, now we will discuss the basic concepts and formulas of Boats and Streams.
What is Boats and Streams ?
Boats and Streams is a very important chapter of Quantitative Aptitude. Questions of this topic is related to find out the speed of boats in the streams of water.
Basically stream is the force of water. Water flows from up to down. And here comes two main thing of this chapter, one is Downstream and another is Upstream.
What is Downstream ?
- The direction, which way the water flows is called Downstream.
What is Upstream ?
- The opposite direction of flowing water is called Upstream.
Basic formulas of Boats and Streams
Suppose, the speed of a stream of a flowing river is x km/hr and the speed of a boat in still water is y km/hr, then
- Downstream Speed = (x + y) km/hr.
So, If the boat is floating in the water with the stream then the speed of the boat will be – Sum of downstream speed and boat speed.
- Upstream Speed = (y – x) km/hr.
And, If the boat is floating in the water against the stream then the speed of the boat will be – Upstream speed minus the boat speed.
Suppose, the speed of downstream is x km/hr and the speed upstream is y km/hr, then
- Speed in still water is = 1/2 (x + y) km/hr.
- Rate of stream = 1/2 (x – y) km/hr.
So, this is all basic concepts of Boats and Streams chapter. Learn this formulas and concept very carefully. If you have face any problem in this chapter of you have anything to say regarding this topic, then feel free to ask us. We will answer your query here in www.AptitudeTricks.com.