Mathematics · Speed, Time and Distance
A boat goes 30 km downstream in 2 hours and returns the same distance upstream in 5 hours. Find the speed of the boat in still water and the speed of the stream, respectively.
- 19 km/hr and 6 km/hr
- 215 km/hr and 2 km/hr
- 312 km/hr and 3 km/hr
- 410.5 km/hr and 4.5 km/hr✓
Correct answer
10.5 km/hr and 4.5 km/hr
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