document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=200410>Question 200410</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Keiko bicycles 4 km/h faster than javier.  In the same time it takes Javier to bicycle 30 km, Keiki can bicycle 42 jm.  How fast does each bicyclist travel?\r<BR>\n" );
document.write( "\n" );
document.write( "javier travel ?<BR>\n" );
document.write( "Keiko  travels ? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #150676 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=150676\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Keiko bicycles 4 km/h faster than javier. <BR>\n" );
document.write( "In the same time it takes Javier to bicycle 30 km, Keiki can bicycle 42 km.<BR>\n" );
document.write( " How fast does each bicyclist travel?<BR>\n" );
document.write( ";<BR>\n" );
document.write( "Let s = j's speed<BR>\n" );
document.write( "then<BR>\n" );
document.write( "(s+4) = k's speed<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Write a time equation, Time = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=dist%2Fspeed ALIGN=MIDDLE  ALT=\"dist%2Fspeed\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ":<BR>\n" );
document.write( "k's time = j's time<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=42%2F%28%28s%2B4%29%29 ALIGN=MIDDLE  ALT=\"42%2F%28%28s%2B4%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=30%2Fs ALIGN=MIDDLE  ALT=\"30%2Fs\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Cross multiply<BR>\n" );
document.write( "42s = 30(s+4)<BR>\n" );
document.write( "42s = 30s + 120<BR>\n" );
document.write( "42x - 30s = 120<BR>\n" );
document.write( "12s = 120<BR>\n" );
document.write( " s = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=120%2F12 ALIGN=MIDDLE  ALT=\"120%2F12\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( " s = 10 km/hr is j's speed<BR>\n" );
document.write( "and<BR>\n" );
document.write( "10 + 4 = 14 km/hr is k' speed<BR>\n" );
document.write( ":<BR>\n" );
document.write( ";<BR>\n" );
document.write( "Check solution by finding the times:<BR>\n" );
document.write( "42/14 = 3 hrs<BR>\n" );
document.write( "30/10 = 3 hrs, confirms our solutions  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );