document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1015582>Question 1015582</A>: <I><SPAN STYLE=\"word-break: break-all;\"> if the speed limit is decreased by 10 km/h on a 100 km stretch of a highway, the trip will take a half hour longer than usual. what is the usual speed limit </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #631949 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=631949\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> How long does the trip take USUALLY?  t.<BR>\n" );
document.write( "How long does trip take at the new speed limit?  t+1/2.\r<BR>\n" );
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document.write( "Usual           r         t          100\r\n" );
document.write( "New Limit      r-10      t+1/2       100\r\n" );
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document.write( "RT=D travel rate rule.<BR>\n" );
document.write( "Do you know what to do?\r<BR>\n" );
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document.write( "(1)  Form a system of equations<BR>\n" );
document.write( "(2)  Solve the system for r and t. </SPAN>\n" );
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