- A50
- B45
- C30
- D40
Step-by-Step Solution
Downstream = 20 km/h, upstream = 10 km/h. d/20 + d/10 = 6 gives 3d/20 = 6, so d = 40 km.
Answer: D) 40
The speed of a boat in still water is 15 km/h and the speed of the stream is 5 km/h. If the boat takes 6 hours to go to a place and return, what is the distance to the place (in km)?
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