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May 29th, 2013, 05:36 PM  #1 
Senior Member Joined: Jan 2012 Posts: 739 Thanks: 7  What is the ferryboat speed in still water?
It takes a ferryboat 2 hours to travel 30 miles going downstream and 3 hours for the return trip upstream. What is the ferryboat speed in still water? What equation do I need to solve or have in other to deal with these problem? 
May 29th, 2013, 08:02 PM  #2 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 14,329 Thanks: 1024  Re: What is the ferryboat speed in still water?
f = ferryboat speed, s = stream speed @(f+s)..................30..................>(2 h) (3 h)<..................30..................@(fs) Show us your stuff! 
May 29th, 2013, 09:02 PM  #3 
Senior Member Joined: May 2013 Posts: 109 Thanks: 0  Re: What is the ferryboat speed in still water?
Hi f+s=15 m/h fs= 10m/h 2f=25m/h f=12.5 m/h 

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