document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=902878>Question 902878</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Manuel can drive 4 times as fast as Carlos can ride his bicycle. If it takes Carlos 3 hours longer than Manuel to travel 80 miles, how fast can Carlos ride his bicycle? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #547591 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=547591\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Manuel can drive 4 times as fast as Carlos can ride his bicycle. If it takes Carlos 3 hours longer than Manuel to travel 80 miles, how fast can Carlos ride his bicycle?<BR>\n" );
document.write( "let x=carlos' bike speed<BR>\n" );
document.write( "4x=Manuel's driving speed<BR>\n" );
document.write( "travel time=distance/speed<BR>\n" );
document.write( "80/x-80/4x=3<BR>\n" );
document.write( "lcd:4x<BR>\n" );
document.write( "320-80=12x<BR>\n" );
document.write( "12x=240<BR>\n" );
document.write( "x=20<BR>\n" );
document.write( "how fast can Carlos ride his bicycle? 20 mph </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );