document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=188738>Question 188738</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A worker drove to work traveling 65 miles per hour. He returned home traveling 55 miles per hour. What was his average speed if the entire trip took 4 hours? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #141558 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=141558\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A worker drove to work traveling 65 miles per hour. He returned home traveling 55 miles per hour. What was his average speed if the entire trip took 4 hours?<BR>\n" );
document.write( "-----------------<BR>\n" );
document.write( "d = rt<BR>\n" );
document.write( "t = d/r<BR>\n" );
document.write( "4 = d/55 + d/65<BR>\n" );
document.write( "4 = (13d + 11d)/715<BR>\n" );
document.write( "24d = 2860<BR>\n" );
document.write( "d = 119 1/6 miles each way<BR>\n" );
document.write( "r (avg) = 2d/4<BR>\n" );
document.write( "r = 59 5/6 mph </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );