document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1024607>Question 1024607</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I can run 3 times faster than I can walk.  One day I walked for 2 hours and ran for 30 mins.  <BR>\n" );
document.write( "&#8203;If I travelled 21.7 km, how fast can I walk.  Use algebra to solve. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #639998 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=639998\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  I can run 3 times faster than I can walk. One day I walked for 2 hours and ran for 30 mins. <BR>\n" );
document.write( "&#8203;If I traveled 21.7 km, how fast can I walk. Use algebra to solve.<BR>\n" );
document.write( "------<BR>\n" );
document.write( "Walk DATA:<BR>\n" );
document.write( "distance = x km ; rate = r kph; time = x/r hrs<BR>\n" );
document.write( "----<BR>\n" );
document.write( "Run DATA::<BR>\n" );
document.write( "distance = 21.7-x km ; rate = 3r kph ; time = (21.7-x)/(3r) hrs<BR>\n" );
document.write( "-----<BR>\n" );
document.write( "Equations:<BR>\n" );
document.write( "x/r = 2<BR>\n" );
document.write( "(21.7-x)/(3r) = 0.5<BR>\n" );
document.write( "----------------------------<BR>\n" );
document.write( "Substitute for \"x\" and solve for \"r\"::<BR>\n" );
document.write( "(21.7-2r)/(3r) = 1/2<BR>\n" );
document.write( "---------<BR>\n" );
document.write( "3r = 43.4 - 4r<BR>\n" );
document.write( "7r = 43.4<BR>\n" );
document.write( "walk rate = 6.2 km/hr<BR>\n" );
document.write( "run rate = 3(6.2) = 18.6 km/hr<BR>\n" );
document.write( "---------------------<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "-------------- </SPAN>\n" );
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