Mathematics · Boats and Streams
A research submersible covers a distance of 360 km downstream and returns to the starting point in a total time of 12.5 hours. If the speed of the current is 12 km/h, find the speed of the submersible in still water.
- 154 km/h
- 260 km/h✓
- 372 km/h
- 448 km/h
Correct answer
60 km/h
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