document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=689652>Question 689652</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Patricia flew a small airplane for 3 hours with the wind and traveled 585km. The return trip against the wind took 5 hours. Find the rate at which she flew in still air. \r<BR>\n" );
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document.write( "What I have tried and failed:\r<BR>\n" );
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document.write( "3(r+w)=585 --> 3r+3w=585<BR>\n" );
document.write( "5(r-w)=585 --> 5r-5w=585\r<BR>\n" );
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document.write( "15r+15w=2925          15r=8775<BR>\n" );
document.write( "15r-15w=1755           r=585      3(585)+3w=585<BR>\n" );
document.write( "                                    1755+3w=585<BR>\n" );
document.write( "                                   -1755   -1755 <--- I figured this was wrong<BR>\n" );
document.write( "                                                      because it was negative.. \r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #426209 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=426209\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a small airplane for 3 hours with the wind and traveled 585km.<BR>\n" );
document.write( " The return trip against the wind took 5 hours. <BR>\n" );
document.write( "Find the rate in still air<BR>\n" );
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document.write( "Let's do it this way<BR>\n" );
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document.write( "Write a distance equation for each way<BR>\n" );
document.write( "3(r+w) = 585<BR>\n" );
document.write( "5(r-w) = 585<BR>\n" );
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document.write( "Simplify, divide the 1st equation by 3, divide the 2nd equation by 5, results:<BR>\n" );
document.write( "r + w = 195<BR>\n" );
document.write( "r - w = 117<BR>\n" );
document.write( "-------------addition eliminates w, find r<BR>\n" );
document.write( "2r = 312<BR>\n" );
document.write( "r = 312/2<BR>\n" );
document.write( "r = 156 km/h in still air<BR>\n" );
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document.write( "You can confirm this, find w and check in the original equations </SPAN>\n" );
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