document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=116318>Question 116318</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0395977223/algebrahomeworkh></A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> I'm supposed to use the five step method to solve this, but no quite sure what that is. The problem is:\r<BR>\n" );
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document.write( "A sailboat travels 20 miles downstream in three hours. It returns in four hours. Find the speed of the sailboat in still water and the rate of the current.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #84579 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=84579\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A sailboat travels 20 miles downstream in three hours. It returns in four hours. Find the speed of the sailboat in still water and the rate of the current. <BR>\n" );
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document.write( "Downstream DATA:<BR>\n" );
document.write( "Distance = 20 miles ; time = 3 hrs ; rate = 20/3 mph<BR>\n" );
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document.write( "Upstream DATA:<BR>\n" );
document.write( "Distance = 20 miles ; time = 4 hrs ; rate = 20/4 = 5 mph<BR>\n" );
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document.write( "Let the speed of the boat be \"b\" ; Let the speed of the current be \"c\"<BR>\n" );
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document.write( "EQUATIONS:<BR>\n" );
document.write( "b+c = 20/3 mph<BR>\n" );
document.write( "b-c = 5 mph<BR>\n" );
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document.write( "2b = 20/3 + 15/3 = 35/3<BR>\n" );
document.write( "b = 35/6 = 5 5/6 mph (speed of the boat in still water)<BR>\n" );
document.write( "Substitute to solve for \"c\":<BR>\n" );
document.write( "35/6 + c = 20/3<BR>\n" );
document.write( "c = 40/6-35/6<BR>\n" );
document.write( "c = 5/6 mph (speed of the current)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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