document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=897274>Question 897274</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Lance heads directly east at a constant rate of 25 miles per hour. One hour later, Levi leaves the same spot heading directly west at a constant rate of 20 miles per hour. How long after Levi leaves will the two cyclists be 250 miles apart? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #544085 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><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=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=544085\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> rate * time = distance.<BR>\n" );
document.write( "r * t = d\r<BR>\n" );
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document.write( "d = 250\r<BR>\n" );
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document.write( "time for Lance is T<BR>\n" );
document.write( "time for Levi is T-1\r<BR>\n" );
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document.write( "Lance travels at 25 mph.<BR>\n" );
document.write( "Levi travels at 20 mph.\r<BR>\n" );
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document.write( "the sum of their distances must be equal to 250.\r<BR>\n" );
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document.write( "you get:\r<BR>\n" );
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document.write( "25*T + 20*(T-1) = 250\r<BR>\n" );
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document.write( "solve for T to get T = 6<BR>\n" );
document.write( "this means that T-1 = 5\r<BR>\n" );
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document.write( "the 2 cyclists will be 250 miles apart 5 hours after Levi starts.\r<BR>\n" );
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document.write( "Lance travels 6 hours at 25 miles per hour for a distance of 150 miles.<BR>\n" );
document.write( "Levi travels 5  hours at 20 miles per hour for a distance of 100 miles.<BR>\n" );
document.write( "100 + 150 = 250.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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