Mathematics, 27.11.2019 09:31 ignacio73

The current in a stream moves at a speed of 10 km/h. a boat travels 31 km upstream and 31 km downstream in a total time of 3 hr. what is the speed of the boat in still water?

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The current in a stream moves at a speed of 10 km/h. a boat travels 31 km upstream and 31 km downstr...

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