Mathematics · Boats and Streams
A boat whose speed in still water is 15 km/h goes 30 km downstream and comes back upstream to the starting point in 4.5 hours. What is the speed of the water current?
- 14 km/h
- 26 km/h
- 35 km/h✓
- 410 km/h
Correct answer
5 km/h
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