Discover a wealth of knowledge at Westonci.ca, where experts provide answers to your most pressing questions. Our platform provides a seamless experience for finding reliable answers from a knowledgeable network of professionals. Get detailed and accurate answers to your questions from a dedicated community of experts on our Q&A platform.

Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.
The speed of the current in a river is 6 mph. A ferry operator who works that part of the river is looking to
buy a new boat for his business. Every day, his route takes him 22.5 miles each way against the current
and back to his dock, and he needs to make this trip in a total of 9 hours. He has a boat in mind, but he
can only test it on a lake where there is no current. How fast must the boat go on the lake in order for it to
serve the ferry operator's needs?