document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1067639>Question 1067639</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Manuel traveled <BR>\n" );
document.write( "3 <BR>\n" );
document.write( "hours nonstop to Mexico, a total of <BR>\n" );
document.write( "167 <BR>\n" );
document.write( "miles. He took a train part of the way, which averaged <BR>\n" );
document.write( "60mph, <BR>\n" );
document.write( "and then took a bus the remaining distance, which averaged <BR>\n" );
document.write( "50mph. <BR>\n" );
document.write( "How long was Manuel on the train?<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 #682753 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=682753\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 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;\" > = time in hrs spent on the train<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+3+-+t+ ALIGN=MIDDLE  ALT=\"+3+-+t+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = time in hrs spent on the bus<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;\" > = distance in miles traveled by train<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+167+-+d+ ALIGN=MIDDLE  ALT=\"+167+-+d+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = distance in miles traveled by bus<BR>\n" );
document.write( "---------------------------------------------<BR>\n" );
document.write( "For the trip by train:<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+60t+ ALIGN=MIDDLE  ALT=\"+d+=+60t+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "For the trip by bus:<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+167+-+d+=+50%2A%28+3+-+t+%29+ ALIGN=MIDDLE  ALT=\"+167+-+d+=+50%2A%28+3+-+t+%29+\"   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=+167+-+60t+=+150+-+50t+ ALIGN=MIDDLE  ALT=\"+167+-+60t+=+150+-+50t+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+10t+=+17+ ALIGN=MIDDLE  ALT=\"+10t+=+17+\"   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+=+1.7+ ALIGN=MIDDLE  ALT=\"+t+=+1.7+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "and<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+3+-+t+=+3+-+.7+ ALIGN=MIDDLE  ALT=\"+3+-+t+=+3+-+.7+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+3+-+t+=+2.3+ ALIGN=MIDDLE  ALT=\"+3+-+t+=+2.3+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "-----------------------<BR>\n" );
document.write( "He was on the train for 1.7 hrs<BR>\n" );
document.write( "Also note: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.7%2A60+=+42+ ALIGN=MIDDLE  ALT=\"+.7%2A60+=+42+\"   DISABLED_style= \"max-width:90%; height:auto;\" > min<BR>\n" );
document.write( "He was on the train for 1 hr 42 min<BR>\n" );
document.write( "--------------------------------<BR>\n" );
document.write( "check:<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+60t+ ALIGN=MIDDLE  ALT=\"+d+=+60t+\"   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+=+60%2A1.7+ ALIGN=MIDDLE  ALT=\"+d+=+60%2A1.7+\"   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+=+102+ ALIGN=MIDDLE  ALT=\"+d+=+102+\"   DISABLED_style= \"max-width:90%; height:auto;\" > miles<BR>\n" );
document.write( "and<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+167+-+d+=+50%2A%28+3+-+t+%29+ ALIGN=MIDDLE  ALT=\"+167+-+d+=+50%2A%28+3+-+t+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+167+-+d+=+50%2A%28+3+-+1.7+%29+ ALIGN=MIDDLE  ALT=\"+167+-+d+=+50%2A%28+3+-+1.7+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+167+-+d+=+50%2A1.3+ ALIGN=MIDDLE  ALT=\"+167+-+d+=+50%2A1.3+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+167+-+d+=+65+ ALIGN=MIDDLE  ALT=\"+167+-+d+=+65+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "and<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+102+%2B+65+=+167+ ALIGN=MIDDLE  ALT=\"+102+%2B+65+=+167+\"   DISABLED_style= \"max-width:90%; height:auto;\" > miles total\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );