document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=275331>Question 275331</A>: <I><SPAN STYLE=\"word-break: break-all;\"> On a bus trip Frank is flying from new york to london,which are 3600 miles apart. With the wind current the flight there only takes 6 hours. On the return trip the flight takes 8 hours against the wind. Write and solve a system of linear equations to determine the airspeed and the wind speed.\r<BR>\n" );
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document.write( "please help me solve this word problem <BR>\n" );
document.write( "thank you very much! (in advance)  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #200836 by </B><A HREF=/tutors/aboutme.mpl?userid=dabanfield><B>dabanfield(803)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=dabanfield><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=200836\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> On a bus trip Frank is flying from new york to london,which are 3600 miles apart. With the wind current the flight there only takes 6 hours. On the return trip the flight takes 8 hours against the wind. Write and solve a system of linear equations to determine the airspeed and the wind speed. <BR>\n" );
document.write( "please help me solve this word problem <BR>\n" );
document.write( "thank you very much! (in advance) \r<BR>\n" );
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document.write( "Remember that distance = rate* time.\r<BR>\n" );
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document.write( "Let w be the wind speed and x the air speed. With the wind we have:\r<BR>\n" );
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document.write( "1.) 3600 = (x+w)*6\r<BR>\n" );
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document.write( "Against the wind we have:\r<BR>\n" );
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document.write( "2.) 3600 = (x-w)*8 \r<BR>\n" );
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document.write( "If we multiply both sides of equation 1.) by 1/6 and both sides of equation 2.) by 1/8 we then have:\r<BR>\n" );
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document.write( "3.) 600 = x + w<BR>\n" );
document.write( "4.) 450 = x - w\r<BR>\n" );
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document.write( "Adding these two equations we have:\r<BR>\n" );
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document.write( "1050 = 2x<BR>\n" );
document.write( "x = 525\r<BR>\n" );
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document.write( "Substituting 525 for x in 3.) above we have:\r<BR>\n" );
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document.write( "600 = 525 + w<BR>\n" );
document.write( "w = 75<BR>\n" );
document.write( "  <BR>\n" );
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