document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=911886>Question 911886</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hello, i was wondering if i can get help with this problem. \r<BR>\n" );
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document.write( "\"The ground speed for jet traffic from Los Angeles to New York City can be about 100 mi/h faster than the ground speed from New York City to Los Angeles. This difference is due to a strong westerly wind at high altitudes. If \"r\" is a jet's ground speed from New York City to Los Angeles, write and simplify and expression for the round-trip air time. The two cities are about 2500 mi apart. \r<BR>\n" );
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document.write( "I managed to reason out these expressions so far:\r<BR>\n" );
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document.write( "L.A to N.Y. = 2500/(r+100)<BR>\n" );
document.write( "N.Y to L.A. = 2500/r\r<BR>\n" );
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document.write( "Im not sure what else to do, but i hope someone can help.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #553478 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=553478\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The ground speed for jet traffic from Los Angeles to New York City can be about 100 mi/h faster than the ground speed from New York City to Los Angeles. This difference is due to a strong westerly wind at high altitudes. If \"r\" is a jet's ground speed from New York City to Los Angeles, write and simplify and expression for the round-trip air time. The two cities are about 2500 mi apart. <BR>\n" );
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document.write( "let x=speed of jet in still air<BR>\n" );
document.write( "c=speed of wind=50 mph(50 mph faster in one directiom and 50 mph slower in the other direction equals a difference of 100 mph between the two directions)<BR>\n" );
document.write( "(x+c)speed of plane with the wind<BR>\n" );
document.write( "(x-c)speed of plane against the wind<BR>\n" );
document.write( "travel time=distance/speed<BR>\n" );
document.write( "round trip air time=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2500%2F%28x%2B50%29%2B2500%2F%28x-50%29 ALIGN=MIDDLE  ALT=\"2500%2F%28x%2B50%29%2B2500%2F%28x-50%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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