My Math Forum What is the ferryboat speed in still water?

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 May 29th, 2013, 05:36 PM #1 Senior Member     Joined: Jan 2012 Posts: 745 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: 14,592 Thanks: 1038 Re: What is the ferryboat speed in still water? f = ferryboat speed, s = stream speed @(f+s)..................30..................>(2 h) (3 h)<..................30..................@(f-s) 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 f-s= 10m/h 2f=25m/h f=12.5 m/h

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