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" );
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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 #150677 by </B><A HREF=/tutors/aboutme.mpl?userid=RAY100><B>RAY100(1637)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=RAY100><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=150677\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let  K  =  velocity  of  Keiko,,,,,,,Let J = velocity  of  Javier  ( km/hr),,,,Let  t = time  (hrs)<BR>\n" );
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document.write( "K= J + 4<BR>\n" );
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document.write( "J=30 /t,,,,,,,K=42/t<BR>\n" );
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document.write( "42/t = 30/t +4,,,,,,,,,,  (substitute  into  (1)  )<BR>\n" );
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document.write( "42 = 30 +4t,,,,,,,,,,,,,,,( multiply thru  by  t)<BR>\n" );
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document.write( "12 = 4t<BR>\n" );
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document.write( "t = 3 hrs<BR>\n" );
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document.write( "J=30 /3 =10  km / hr,,,,,,,,,K=42 /3 =14  km/hr,,,,,ANSWER<BR>\n" );
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document.write( "checking  in  (1)  14 = 10 +4,,,,,ok </SPAN>\n" );
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