document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1085265>Question 1085265</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Erin rides her bike from home to school in 15 minutes.  If she increases her speed by 5 km/hr, she reduces her travel time by 5 minutes.  What is the distance from her home to her school.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #699331 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=699331\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+ ALIGN=MIDDLE  ALT=\"+d+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = the distance from home to school in km<BR>\n" );
document.write( "Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+s+ ALIGN=MIDDLE  ALT=\"+s+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = her speed in km/hr<BR>\n" );
document.write( "Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+ ALIGN=MIDDLE  ALT=\"+t+\"   DISABLED_style= \"max-width:90%; height:auto;\" > =her time in hrs to go from home to school<BR>\n" );
document.write( "-------------------------------------------------<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+s%2At+ ALIGN=MIDDLE  ALT=\"+d+=+s%2At+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Convert minutes to hrs<BR>\n" );
document.write( "[ min ] x [ hrs/min ] = [ hrs ]<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+15%2A%28+1%2F60+%29+=+1%2F4+ ALIGN=MIDDLE  ALT=\"+15%2A%28+1%2F60+%29+=+1%2F4+\"   DISABLED_style= \"max-width:90%; height:auto;\" > hrs<BR>\n" );
document.write( "and, also:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+5%2A%281%2F60%29+=+1%2F12+ ALIGN=MIDDLE  ALT=\"+5%2A%281%2F60%29+=+1%2F12+\"   DISABLED_style= \"max-width:90%; height:auto;\" > hrs<BR>\n" );
document.write( "----------------------------<BR>\n" );
document.write( "Her equation for  a normal trip is:<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+s%2A%281%2F4%29+ ALIGN=MIDDLE  ALT=\"+d+=+s%2A%281%2F4%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "If she increases her speed, the equation is:<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+%28+s+%2B+5+%29%2A%28+1%2F4+-+1%2F12+%29+ ALIGN=MIDDLE  ALT=\"+d+=+%28+s+%2B+5+%29%2A%28+1%2F4+-+1%2F12+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "----------------------------------<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+%28+s+%2B+5+%29%2A%28+2%2F12+%29+ ALIGN=MIDDLE  ALT=\"+d+=+%28+s+%2B+5+%29%2A%28+2%2F12+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+%28+s+%2B+5+%29%2A%281%2F6%29+ ALIGN=MIDDLE  ALT=\"+d+=+%28+s+%2B+5+%29%2A%281%2F6%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Plug (1) into (2)<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%281%2F4%29%2As+=+%28+s+%2B+5+%29%2A%281%2F6+%29+ ALIGN=MIDDLE  ALT=\"+%281%2F4%29%2As+=+%28+s+%2B+5+%29%2A%281%2F6+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Multiply both sides by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+12+ ALIGN=MIDDLE  ALT=\"+12+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+3s+=+2%2A%28+s+%2B+5+%29+ ALIGN=MIDDLE  ALT=\"+3s+=+2%2A%28+s+%2B+5+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+3s+=+2s+%2B+10+%7D%7D%0D%0A%282%29+%7B%7B%7B+s+=+10+ ALIGN=MIDDLE  ALT=\"+3s+=+2s+%2B+10+%7D%7D%0D%0A%282%29+%7B%7B%7B+s+=+10+\"   DISABLED_style= \"max-width:90%; height:auto;\" > km/hr<BR>\n" );
document.write( "and<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+s%2A%281%2F4%29+ ALIGN=MIDDLE  ALT=\"+d+=+s%2A%281%2F4%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+10%2A%281%2F4%29+ ALIGN=MIDDLE  ALT=\"+d+=+10%2A%281%2F4%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+2.5+ ALIGN=MIDDLE  ALT=\"+d+=+2.5+\"   DISABLED_style= \"max-width:90%; height:auto;\" > km<BR>\n" );
document.write( "The distance from home to school is 2.5 km<BR>\n" );
document.write( "--------------------------------------------<BR>\n" );
document.write( "check answer:<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+%28+s+%2B+5+%29%2A%281%2F6%29+ ALIGN=MIDDLE  ALT=\"+d+=+%28+s+%2B+5+%29%2A%281%2F6%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+%28+10+%2B+5+%29%2A%281%2F6%29+ ALIGN=MIDDLE  ALT=\"+d+=+%28+10+%2B+5+%29%2A%281%2F6%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+15%2F6+ ALIGN=MIDDLE  ALT=\"+d+=+15%2F6+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+5%2F2+ ALIGN=MIDDLE  ALT=\"+d+=+5%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+2.5+ ALIGN=MIDDLE  ALT=\"+d+=+2.5+\"   DISABLED_style= \"max-width:90%; height:auto;\" > km<BR>\n" );
document.write( "OK\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );