Mathematics · Time, Speed and Distance
A boat having a speed of 30 km/h in still water goes 60 km downstream and comes back in 4 hours 30 minutes. The speed of the stream is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 125 km/h
- 230 km/h
- 310 km/h✓
- 420 km/h
Correct answer
10 km/h
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