Question

If the speed of boat in still water is x km/hr and speed of stream is y km/hr, then speed of the boat downstream.
Pls answer fast..
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Answer 1

The speed of boat downstream is (x + y) km/hr.

The speed of boat in still water is x km/hr and the speed of stream is y km/hr.

We have to find the speed of the boat downstream.

Concepts :

• Still water : Under this situation, the water is considered to be stationary. that means the speed of water is zero.
• Stream : the moving water in a river is known as Stream. so the speed of moving water is the speed of the stream.
• Upstream : If a boat or swimmer is flowing or swimming in the opposite direction of stream, It is called upstream. in this situation, speed of upstream is the difference of the speed of boat or swimmer to the speed of stream.
• Downstream : If a boat is flowing along the direction of stream, It is called downstream. in this situation, speed of downstream is the sum of speed of boat and stream.

Here speed of boat in still water = x km/hr.

speed of stream = y km/hr

∴ speed of boat downstream = (x + y) km/hr.

Therefore the speed of boat downstream is (x + y) km/hr.

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