Mathematics · Speed, Distance and Time
A boat goes downstream and covers a distance of 40 km in 2 hours. While coming back upstream, the boat takes 30 minutes longer to cover the same distance. The speed of the current (in km/h) is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 12 km/h✓
- 21.5 km/h
- 31.4 km/h
- 41 km/h
Correct answer
2 km/h
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