Posted by **lee** on Tuesday, January 29, 2013 at 10:33am.

please explain the step for this I have no idea.

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 everyday his route takes him 22.5 miles against the current and back to his deck and he needs 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 in no current how fast must the boat go on the lake in order for it to serve the ferry operators needs.

This is what I got;

22.5/(x+6)+22.5/(x-6)=9

x=9mph

## Answer this Question

## Related Questions

- algebra - please explain the step for this I have no idea. the speed of the ...
- algabre - the speed of the current in a river is 6 mph a ferry operator who ...
- math - A ferry boat operator is required to drive directly to the opposite side ...
- physics - When swimming across a river you swim to the east at 1.0 mph while the...
- physics - A ferry is crossing a river. The ferry is headed due north with a ...
- trig/ vectors - Points C and D are directly across from each other on opposite ...
- Physics - A ferry is crossing a river.The ferry is headed due north with a speed...
- physics - can someone please take me step by step on this problem a swimers ...
- physics - A ferry is crossing a river. The ferry is headed due north with a ...
- physics - A swimmer can swim 3 mph in still water. She decides to swim ...

More Related Questions