document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=33462>Question 33462</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I have home-schol curriculum and no text books. My problem is this:<BR>\n" );
document.write( "At 10:00 am two planes leave an airport. If the northbound plane flies 280mph and the southbound plane at 320mph, at what time will they be 1,000 miles apart? Help??? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #19852 by </B><A HREF=/tutors/aboutme.mpl?userid=Earlsdon><B>Earlsdon(6294)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Earlsdon><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=19852\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You can use the distance formula for this problem:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d+=+rt ALIGN=MIDDLE  ALT=\"d+=+rt\"   DISABLED_style= \"max-width:90%; height:auto;\" > where:<BR>\n" );
document.write( "d = distance traveled, r = rate of travel (speed) and t = time of travel.\r<BR>\n" );
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document.write( "For the north-bound plane:<BR>\n" );
document.write( "1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d1+=+r1%28t%29 ALIGN=MIDDLE  ALT=\"d1+=+r1%28t%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > r1 = 280 mph<BR>\n" );
document.write( "For the south-bound plane:<BR>\n" );
document.write( "2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d2+=+r2%28t%29 ALIGN=MIDDLE  ALT=\"d2+=+r2%28t%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > r2 = 320 mph\r<BR>\n" );
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document.write( "You want the sum of the distances (d1 + d2) to equal 1,000 miles.\r<BR>\n" );
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document.write( "From equation 1) you get:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d1+=+280t ALIGN=MIDDLE  ALT=\"d1+=+280t\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "From equation 2) you get:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d2+=+320t ALIGN=MIDDLE  ALT=\"d2+=+320t\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
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document.write( "Add the two d's.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=280t+%2B+320t+=+1000 ALIGN=MIDDLE  ALT=\"280t+%2B+320t+=+1000\"   DISABLED_style= \"max-width:90%; height:auto;\" > Simplify and solve for t.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=600t+=+1000 ALIGN=MIDDLE  ALT=\"600t+=+1000\"   DISABLED_style= \"max-width:90%; height:auto;\" > Divide both sides of the equation by 600<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=+1000%2F600 ALIGN=MIDDLE  ALT=\"t+=+1000%2F600\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=+1.67 ALIGN=MIDDLE  ALT=\"t+=+1.67\"   DISABLED_style= \"max-width:90%; height:auto;\" >hours.\r<BR>\n" );
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document.write( "t = 1 hour and 40 minutes.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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