What is the speed of a boat in still water if it travels 3.6 km downstream in 0.5 hours, and upstream the same

What is the speed of a boat in still water if it travels 3.6 km downstream in 0.5 hours, and upstream the same distance travels in 1 hour?

The speed of the boat (in m / s) in still water if it passes 3.6 km downstream in 0.5 hours, and against the current
the same distance covered in 1 hour is 1.5 m / s.



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