document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=964174>Question 964174</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A train travels 80 mi in the same time that a light plane can travel 280 mi. If the speed of the plane is 100 mi/h faster than that of the train, find each of the rates. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #589072 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39629)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=589072\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> ______________rate_________time__________distance<BR>\n" );
document.write( "train__________r____________t____________U<BR>\n" );
document.write( "plane_________r+k___________t____________V\r<BR>\n" );
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document.write( "UNKNOWNS:  r, t<BR>\n" );
document.write( "KNOWNS: k=100,U=80,V=280\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=system%28rt=U%2C%28r%2Bk%29t=V%29 ALIGN=MIDDLE  ALT=\"system%28rt=U%2C%28r%2Bk%29t=V%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t=U%2Fr ALIGN=MIDDLE  ALT=\"t=U%2Fr\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "-<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=rt%2Bkt=V ALIGN=MIDDLE  ALT=\"rt%2Bkt=V\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r%28U%2Fr%29%2Bk%28U%2Fr%29=V ALIGN=MIDDLE  ALT=\"r%28U%2Fr%29%2Bk%28U%2Fr%29=V\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=U%2BkU%2Fr=V ALIGN=MIDDLE  ALT=\"U%2BkU%2Fr=V\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=kU%2Fr=V-U ALIGN=MIDDLE  ALT=\"kU%2Fr=V-U\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2Fr=%28V-U%29%2F%28kU%29 ALIGN=MIDDLE  ALT=\"1%2Fr=%28V-U%29%2F%28kU%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Their reciprocals are then also equal:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28highlight%28r=%28kU%29%2F%28V-U%29%29%29 ALIGN=MIDDLE  ALT=\"highlight%28highlight%28r=%28kU%29%2F%28V-U%29%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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