document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=266340>Question 266340</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a trucker drove for 4 hours before he encountered icy road condition.  He reduced his speed by 20 mph and continued driving for 3 more hours.  Find his average speed during the first part of the trip if the entire trip was 325 miles. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #195682 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=195682\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a trucker drove for 4 hours before he encountered icy road condition. He reduced his speed by 20 mph and continued driving for 3 more hours. Find his average speed during the first part of the trip if the entire trip was 325 miles.<BR>\n" );
document.write( "---<BR>\n" );
document.write( "1st segment DATA:<BR>\n" );
document.write( "time = 4 hrs. ; rate = x mph ; distance = rt = 4x miles<BR>\n" );
document.write( "------------------<BR>\n" );
document.write( "2nd segment DATA:<BR>\n" );
document.write( "time = 3 hrs. ; rate = x-20 mph ; distance = rt = 3x-60 miles<BR>\n" );
document.write( "---------------------<BR>\n" );
document.write( "Equation:<BR>\n" );
document.write( "distance + distance = 325 miles<BR>\n" );
document.write( "4x + 3x-60 = 325 miles<BR>\n" );
document.write( "7x = 385<BR>\n" );
document.write( "x = 55 mph (rate during 1st segment)<BR>\n" );
document.write( "=============================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );