document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=282483>Question 282483</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Help...<BR>\n" );
document.write( "A sailboat travels 20 miles downstream in 4 hours. It returns in 5 hours. Find the speed of the sailboat in still water and the rate of the current.\r<BR>\n" );
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document.write( "Ugggg<BR>\n" );
document.write( "Thanks </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #205093 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=205093\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A sailboat travels 20 miles downstream in 4 hours. It returns in 5 hours. Find the speed of the sailboat in still water and the rate of the current<BR>\n" );
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document.write( "Write down what you know:<BR>\n" );
document.write( "b = speed of the boat<BR>\n" );
document.write( "c = speed of the current<BR>\n" );
document.write( "Downstream the speed is b+c<BR>\n" );
document.write( "Upstream it's b-c<BR>\n" );
document.write( "The distance is the same<BR>\n" );
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document.write( "d = rt<BR>\n" );
document.write( "20 = 4*(b+c) = 5*(b-c)<BR>\n" );
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document.write( "4b + 4c = 20<BR>\n" );
document.write( "5b - 5c = 20<BR>\n" );
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document.write( "b + c = 5<BR>\n" );
document.write( "b - c = 4<BR>\n" );
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document.write( "2b = 9<BR>\n" );
document.write( "b = 4.5 mph<BR>\n" );
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document.write( "c = 1/2 mph<BR>\n" );
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