document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=891896>Question 891896</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A plane filies 480 milies in an easternly direction, with the wind, in 4 hours, returning westernly along the same route, against the wind. The plane takes 6 hours.  What is the rate of the plane in still air and  what is the rate of the wind? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #540143 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39631)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=540143\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> r for speed in still air<BR>\n" );
document.write( "w for speed of the wind\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "_________________________speed_________time________distance<BR>\n" );
document.write( "EASTERN__________________r+w___________4__________480<BR>\n" );
document.write( "WESTERN__________________r-w___________6__________480\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "The basic uniform rates travel relationship can be easily used RT=D rate time distance,<BR>\n" );
document.write( "to form two linear equations:\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "_________________________speed_________time___________distance<BR>\n" );
document.write( "EASTERN__________________r+w___________4_______________(r+w)*4=480<BR>\n" );
document.write( "WESTERN__________________r-w___________6_______________(r-w)*6=480\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "The eastern equation is simplifiable to <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%28%28r%2Bw%29=120%29 ALIGN=MIDDLE  ALT=\"highlight_green%28%28r%2Bw%29=120%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >;<BR>\n" );
document.write( "and the western equation into <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%28%28r-w%29=80%29 ALIGN=MIDDLE  ALT=\"highlight_green%28%28r-w%29=80%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >.<BR>\n" );
document.write( "Solve for r and w.\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );