What is the speed of the river in km/hr?

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    Boat Kinematics
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The discussion focuses on calculating the speed of a river based on a boat's travel times. The boat travels 15 km downstream in 3.1 hours, resulting in a downstream speed of 4.84 km/hr, while it takes 5.1 hours to travel the same distance upstream, yielding an upstream speed of 2.94 km/hr. The river's speed can be determined by analyzing the difference between the boat's speeds downstream and upstream, confirming that the river's speed is 1 km/hr when the boat's speed is 2 km/hr.

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a boat takes 3.1 hours to travel 15 km down a river, then takes 5.1 hours to travel the same distance upstream. how fast is the river traveling.

I found the boat is traveling at 4.84km/hr down the stream and 2.94 km/hr up it. not sure where to go next.

Any help would be appreciated.
 
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d=rt
 
Let's say the river's speed is 1 kph and the boat's speed is 2 kph then the boat will travel downstream at 3 kph and upstream at 1 kph. So when you go downstream you add the speeds, but when going upstream, you subtract the river's speed from the boat's speed. Try working that backwards.
 

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