Asked by kay
If the river current flows at an average 3 miles per hour, then a tour boat makes the 9-mile tour downstream with the current and back the 9 miles against the current in 4 hours. What is the average speed of the boat in still water?
Answers
Answered by
oobleck
since time = distance/speed,
9/(s-3) + 9/(s+3) = 4
9/(s-3) + 9/(s+3) = 4
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.