document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=230569>Question 230569</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A plane flying with the jet stream flew from Los Angeles to Chicago, a distance of 1200 mi, in 4 h. Flying against the jet stream, the plane could fly only 560 mi in the same amount of time. <BR>\n" );
document.write( "Find the rate of the plane in calm air and the rate of the wind.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #170745 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley77><B>checkley77(12844)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley77><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=170745\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> D=RT<BR>\n" );
document.write( "R=D/T<BR>\n" );
document.write( "R=1200/4<BR>\n" );
document.write( "R=300 MPH. IS THE SPEED WITH THE JET STREAM.<BR>\n" );
document.write( "R=560/4<BR>\n" );
document.write( "4=140 MPH. IS THE SPEED AGAINST THE WIND.<BR>\n" );
document.write( "(300-140)/2=160/2=80 MPH. IS THE SPEED OF THE WIND.<BR>\n" );
document.write( "PROOF:<BR>\n" );
document.write( "300-80=220 MPH. IS THE SPEED OF THE PLANE IN STILL AIR.<BR>\n" );
document.write( "140+80=220 MPH. DITTO. </SPAN>\n" );
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