document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=833843>Question 833843</A>: <I><SPAN STYLE=\"word-break: break-all;\">  A Piper Saratoga airplane leaves Philadelphia at noon, and flies in a <BR>\n" );
document.write( "straight line toward Pittsburgh at a constant 150 mph. One hour later, a <BR>\n" );
document.write( "Piper 6X plane leaves Pittsburgh and flies in a straight line toward <BR>\n" );
document.write( "Philadelphia at a constant 120 mph. The distance between Philadelphia <BR>\n" );
document.write( "and Pittsburgh is 310 miles. <BR>\n" );
document.write( " <BR>\n" );
document.write( "a. Calculate the time on a passenger's watch when the two planes pass <BR>\n" );
document.write( "each other. \r<BR>\n" );
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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 #502739 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=502739\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Say the Piper Saratoga =PS<BR>\n" );
document.write( "Say the Piper 6X =6X<BR>\n" );
document.write( "--------------------<BR>\n" );
document.write( "How far does PS fly in 1 hr?<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d%5BPS%5D+=+150%2A1+ ALIGN=MIDDLE  ALT=\"+d%5BPS%5D+=+150%2A1+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d%5BPS%5D+=+150+ ALIGN=MIDDLE  ALT=\"+d%5BPS%5D+=+150+\"   DISABLED_style= \"max-width:90%; height:auto;\" > mi<BR>\n" );
document.write( "-------------------<BR>\n" );
document.write( "The distance between them is now<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+310+-+150+=+160+ ALIGN=MIDDLE  ALT=\"+310+-+150+=+160+\"   DISABLED_style= \"max-width:90%; height:auto;\" > mi<BR>\n" );
document.write( "Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+ ALIGN=MIDDLE  ALT=\"+d+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = the distance PS travels <BR>\n" );
document.write( "until they pass each other<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+160+-+d+ ALIGN=MIDDLE  ALT=\"+160+-+d+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = distance 6X travels until they  <BR>\n" );
document.write( "pass each other<BR>\n" );
document.write( "Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+ ALIGN=MIDDLE  ALT=\"+t+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = the time in hours from when<BR>\n" );
document.write( "6X leaves Pittsburg until the pass each other<BR>\n" );
document.write( "--------------------<BR>\n" );
document.write( "PS equation:<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+150t+ ALIGN=MIDDLE  ALT=\"+d+=+150t+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "6X equation:<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+160+-+d+=+120t+ ALIGN=MIDDLE  ALT=\"+160+-+d+=+120t+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "----------------------<BR>\n" );
document.write( "Substitute (1) into (2)<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+160+-+150t+=+120t+ ALIGN=MIDDLE  ALT=\"+160+-+150t+=+120t+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+270t+=+160+ ALIGN=MIDDLE  ALT=\"+270t+=+160+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+=+.5926+ ALIGN=MIDDLE  ALT=\"+t+=+.5926+\"   DISABLED_style= \"max-width:90%; height:auto;\" > hrs<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.5926%2A60+=+35.555+ ALIGN=MIDDLE  ALT=\"+.5926%2A60+=+35.555+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.555%2A60+=+33.333+ ALIGN=MIDDLE  ALT=\"+.555%2A60+=+33.333+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "-----------------------<BR>\n" );
document.write( "In minutes, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+ ALIGN=MIDDLE  ALT=\"+t+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 35 min 33 sec<BR>\n" );
document.write( "This is the time after 1 PM, so the time <BR>\n" );
document.write( "on a passenger's watch when they pass is<BR>\n" );
document.write( "1:35:33 PM<BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "Check answer:<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+150t+ ALIGN=MIDDLE  ALT=\"+d+=+150t+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+150%2A.5926+ ALIGN=MIDDLE  ALT=\"+d+=+150%2A.5926+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+88.889+ ALIGN=MIDDLE  ALT=\"+d+=+88.889+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "and<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+160+-+d+=+120t+ ALIGN=MIDDLE  ALT=\"+160+-+d+=+120t+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+160+-+d+=+120%2A.5926+ ALIGN=MIDDLE  ALT=\"+160+-+d+=+120%2A.5926+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+160+-+71.111+ ALIGN=MIDDLE  ALT=\"+d+=+160+-+71.111+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+88.889+ ALIGN=MIDDLE  ALT=\"+d+=+88.889+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "OK\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );