document.write( "Question 449602: The question is the rate that a boat travels in still water is r and the current speed is c miles per hour. It takes 1.5 hours to travel 4 miles downsteam. Do I add or subtract c and r \n" ); document.write( "

Algebra.Com's Answer #309352 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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The question is the rate that a boat travels in still water is r and the current speed is c miles per hour.
\n" ); document.write( " It takes 1.5 hours to travel 4 miles downstream.\" Do I add or subtract c and r\r
\n" ); document.write( "\n" ); document.write( "Downstream, you add r and c: (r+c)
\n" ); document.write( "Upstream, you subtract c from r; (r-c)
\n" ); document.write( ":
\n" ); document.write( "The equation for,\"It takes 1.5 hours to travel 4 miles downstream.\"
\n" ); document.write( "1.5(r + c) = 4 \n" ); document.write( "

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