document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=994018>Question 994018</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Two planes are 485 mi apart and are traveling toward each other. One plane is traveling 150 mph faster than the other plane. The planes pass each other in 0.5 h. Find the speed of each plane. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #613213 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52795)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ikleyn><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=ikleyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=613213\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
document.write( "Let &nbsp;u&nbsp; be the speed of the faster airplane, &nbsp;in miles per hour &nbsp;(mph).\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Then the speed of the other airplane is &nbsp;(u-150)&nbsp; miles per hour.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "The equation is \r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "0.5*u + 0.5*(u-150) = 485\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "(in half an hour airplanes flying toward each other covered the entire distance).\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Simplify and solve it:\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "0.5u + 0.5u  - 75 = 485,\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "u = 485 + 75 \r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "u = 560 <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=mi%2Fh ALIGN=MIDDLE  ALT=\"mi%2Fh\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "The speed of the faster airplane is 560 miles per hour.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "The speed of the other airplane is 560-150 410 miles per hour.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );