document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=211220>Question 211220</A>: <I><SPAN STYLE=\"word-break: break-all;\"> You drive 1500 miles to California.  On the way home, you averaged 10 miles per hour less, and the drive took you 5 extra hours.  What was your average speed on the way to California? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #159581 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley77><B>checkley77(12844)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley77><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=159581\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> D=RT<BR>\n" );
document.write( "T=1500/R<BR>\n" );
document.write( "1500=(R-10)(T+5)<BR>\n" );
document.write( "1500=(R-10)(1500/R+5)<BR>\n" );
document.write( "1500=1500-15000/R+5R-50<BR>\n" );
document.write( "0=-15000/R+5R-50<BR>\n" );
document.write( "(-15000+5R*R)/R=50<BR>\n" );
document.write( "-15000+5R^2=50R<BR>\n" );
document.write( "-15000+5R^2-50R=0<BR>\n" );
document.write( "5R^2-50R-15000=0<BR>\n" );
document.write( "5(R^2-10R-3000)=0<BR>\n" );
document.write( "5(R-60)(R+50)=0<BR>\n" );
document.write( "R-60=0<BR>\n" );
document.write( "R=60 MPH. FOR THE TRIP TO CALIFORNIA.<BR>\n" );
document.write( "1500/60=25 HOURS FOR THE TRIP TO CALIFORNIA.<BR>\n" );
document.write( "1500=(60-10)(25+5)<BR>\n" );
document.write( "1500=50*30<BR>\n" );
document.write( "1500=1500 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );