document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=707780>Question 707780</A>: <I><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "You drove from your home to dallas at an average speed of 60 miles per hour and returned home at an average speed of 45 miles per hour.if the total driving time was 21 hours, how far is it from your home to dallas. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #435886 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley79><B>checkley79(3341)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley79><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=435886\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> d=rt<BR>\n" );
document.write( "d=60t to Dallas.<BR>\n" );
document.write( "d=45(21-t) from Dallas.<BR>\n" );
document.write( "60t=45(21-t)<BR>\n" );
document.write( "60t=945-45t<BR>\n" );
document.write( "60t+45t=945<BR>\n" );
document.write( "105t=945<BR>\n" );
document.write( "t=945/105<BR>\n" );
document.write( "t=9 hours for the trip to Dallas.<BR>\n" );
document.write( "21-9=12 hours from Dallas.<BR>\n" );
document.write( "Proof:<BR>\n" );
document.write( "60*9=45*12<BR>\n" );
document.write( "540=540 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );