document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=672211>Question 672211</A>: <I><SPAN STYLE=\"word-break: break-all;\"> if A walked 1km/hr faster then A would have taken 10 min less to walk 2km/hr. find the speed  of A </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #417857 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=417857\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  if A walked 1km/hr faster then A would have taken 10 min less to walk 2km/hr. find the speed of A<BR>\n" );
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document.write( "let s = the speed of A<BR>\n" );
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document.write( "Change 10 min to 10/60 = 1/6 hr<BR>\n" );
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document.write( "slow time - fast time = 10 min<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%2Fs ALIGN=MIDDLE  ALT=\"2%2Fs\"   DISABLED_style= \"max-width:90%; height:auto;\" > - <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%2F%28%28s%2B1%29%29 ALIGN=MIDDLE  ALT=\"2%2F%28%28s%2B1%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F6 ALIGN=MIDDLE  ALT=\"1%2F6\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "mult by 6s(s+1), cancel the denominators and you have:<BR>\n" );
document.write( "6(s+1)*2 - 6s(2) = s(s+1)<BR>\n" );
document.write( "12(s+1) - 12s = s^2 + s<BR>\n" );
document.write( "12s + 12 - 12s = s^2 + s<BR>\n" );
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document.write( "A quadratic equation<BR>\n" );
document.write( "s^2 + s - 12 = 0<BR>\n" );
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document.write( "Factors to<BR>\n" );
document.write( "(s+4)(s-3) = 0<BR>\n" );
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document.write( "the positive solution is what we want here<BR>\n" );
document.write( "s = 3 km/h is his speed<BR>\n" );
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document.write( "Check this<BR>\n" );
document.write( "2/3  - 2/4 =<BR>\n" );
document.write( "8/12  - 6/12 = 2/12 = 1/6 </SPAN>\n" );
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