Mathematics · Boats and Streams
A small airplane whose speed in still air is 120 kmph goes 240 km with the wind and comes back against the wind in a total of 4 hours 30 minutes. Determine the speed of the wind.
- 140 kmph✓
- 230 kmph
- 350 kmph
- 4120 kmph
Correct answer
40 kmph
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