Question

The speed of a boat in still water is 55km/hr.if the speed of the boat against the stream is 33 km/hr , what is the speed of the stream​

Answer 1

The anwser to this question is that the speed of the stream is 24 km/hr.

As we know, acc to physics, when a boat goes upstream, it is going in a direction opposite to the flow of water.

Therefore effective speed of the boat going upstream will be

Speed of boat in still water — speed of stream.

Therefore speed of stream

= Speed of boat in still water — speed of boat going upstream

= 55 — 31 = 24 km/hr.

Also, one point to note is that the *speed of the stream should always be slower than the speed of the boat at any point of time* or else going upstream would be impossible.

Answer 2

Answer:

24 km/hr

Step-by-step explanation:

Concept= River Boat Problem

Given= The speed of boat in still water and against stream

To find= The speed of stream

Explanation=

We have been given the information as the speed of a boat in still water is 55km/hr and the speed of the boat against the stream is 33 km/hr and we need to find the speed of stream.

Speed of boast in still water= 55 km/hr

Speed of boat against the stream = 33 km/hr

Let the speed of stream be x km/hr

We know that when the boat is still if now in a stream flow when the boat flows along the stream the speed increases as

speed of boat in still + speed of stream

but when the boat is flowing in opposite direction to the flow of stream it gets subtracted as

speed of boat in still - speed of stream

So in the given problem the flow is opposite so the speed of stream will be calculated as

speed in still water - speed of stream = speed of moving boat

55 - x = 33

=> x= 55-33

x= 24

Therefore the speed of stream is 24 km/hr

#SPJ2