document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=840602>Question 840602</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A car travels to and from a city 72km away in 2 hours. If the average speed on the return trip is 30km/h less than the trip to the city, what was the average speed of the car when it was going toward the city? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #509063 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=509063\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a+b=2,<BR>\n" );
document.write( "a*x=72,<BR>\n" );
document.write( "b*(x-30)=72<BR>\n" );
document.write( "a = 4/5=.8,   b = 6/5=1.2,   x = 90 kmh towards the city<BR>\n" );
document.write( "check\r<BR>\n" );
document.write( "\n" );
document.write( ".8*90=72<BR>\n" );
document.write( "1.2*60=72<BR>\n" );
document.write( "ok </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );