document.write( "Question 570609: If a boat is traveling downstream to a destination and it takes 40 minutes in a 3 mph current. Traveling the same distance going upstream with 3mph current it takes 60 minutes. How fast would the boat be traveling in still water?\r
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\n" ); document.write( "\n" ); document.write( "I'm not even sure how to go about this but I think going downhill the boat is going 13.3mph and uphill the boat is having to go 20mph?
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Algebra.Com's Answer #367708 by mananth(16946)\"\" \"About 
You can put this solution on YOUR website!
Boat speed =x mph
\n" ); document.write( "current speed 3 mph
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\n" ); document.write( "time with current 0.67 hours
\n" ); document.write( "time against current 1 hours \r
\n" ); document.write( "\n" ); document.write( "0.67(x+3)=1(x-3)
\n" ); document.write( "0.67x+ 2.00 =1x-3
\n" ); document.write( "1 x -0.67 x = 2 + 3
\n" ); document.write( "0.33 x = 5
\n" ); document.write( "x = 15 mph Boat speed
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