document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1046964>Question 1046964</A>: <I><SPAN STYLE=\"word-break: break-all;\"> It took Debbie 5.4 hours to drive hours to her mothers house on Wednesday morning. On her return trip on Thursday night, traffic was heavier, so the trip took her 6 hours. Her average speed on Thursday was 4mph slower than Wednesday. What was her average speed on Thursday? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #662423 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=662423\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Distance=speed * time<BR>\n" );
document.write( "Going there, distance= 5.4hrs * x miles per hour<BR>\n" );
document.write( "Coming back, distance= 6 hours * (x-4) miles per hour<BR>\n" );
document.write( "The distance is the same both ways so set them equal to each other<BR>\n" );
document.write( "5.4x=6(x-4)<BR>\n" );
document.write( "5.4x=6x-24<BR>\n" );
document.write( "-0.6x=-24<BR>\n" );
document.write( "x=24/0.6 (minus signs divide out)<BR>\n" );
document.write( "=40 mph going<BR>\n" );
document.write( "and 36 mph back.<BR>\n" );
document.write( "In 5.4 hours at 40 mph it is 216 miles<BR>\n" );
document.write( "in 6 hours at 36 mph, it is 216 miles<BR>\n" );
document.write( "The answer is the average speed on Thursday, the 6 hour trip.  Her average speed was 36 mph. </SPAN>\n" );
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