A river has a steady speed of 0.500 m/s. A student swims upstream a distance of 1.00 km and swims back to the starting point. If the student can swim at a speed of 1.20 m/s in still water, how long does the trip take? Compare this with the time the trip would take if the water were still.
mucle12
The time has 0.72 minutes
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Izzuddin27
kalo bisa dengan caranya juga
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