document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=584488>Question 584488</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A round-trip by bus takes 12 hours. If the rate going was 54 kph and the rate returning was 90 kph, how far was the round-trip? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #372798 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=372798\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A round-trip by bus takes 12 hours. If the rate going was 54 kph and the rate returning was 90 kph, how far was the round-trip?<BR>\n" );
document.write( "**<BR>\n" );
document.write( "let x=going travel time<BR>\n" );
document.write( "12-x=return travel time<BR>\n" );
document.write( "Distance=speed*travel time<BR>\n" );
document.write( "54x=90(12-x)<BR>\n" );
document.write( "54x=1080-90x<BR>\n" );
document.write( "144x=1080<BR>\n" );
document.write( "x=7.5 hrs<BR>\n" );
document.write( "12-x=4.5 hrs<BR>\n" );
document.write( "Round-trip distance=7.5*54+4.5*90=810 km<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );