document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1119232>Question 1119232</A>: <I><SPAN STYLE=\"word-break: break-all;\"> During a charity ride Sally and Ruth each cycle 120 km. Ruth’s average speed for the journey is 2km faster than Sally’s average speed.<BR>\n" );
document.write( "A) let Sally’s speed be x km/ h. Write expressions in terms of x, for the time needed by each girl to complete her journey. <BR>\n" );
document.write( "B) if Ruth takes 40 minutes less time to compete the journey, write an expression and solve it to find Sally’s average speed during the charity ride  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #734699 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=734699\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (A)<BR>\n" );
document.write( "Equation for Sally's time:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t%5B1%5D+=+120%2Fx+ ALIGN=MIDDLE  ALT=\"+t%5B1%5D+=+120%2Fx+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Equation for Ruth's time:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t%5B2%5D+=+120%2F%28+x%2B2+%29+ ALIGN=MIDDLE  ALT=\"+t%5B2%5D+=+120%2F%28+x%2B2+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(B)<BR>\n" );
document.write( "Note that you must convert minutes to hrs<BR>\n" );
document.write( "since the speeds are in km/hr<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+120%2Fx+-+40%2F60+=+120%2F%28+x%2B2+%29+ ALIGN=MIDDLE  ALT=\"+120%2Fx+-+40%2F60+=+120%2F%28+x%2B2+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+120%2Fx+-+2%2F3+=+120%2F%28+x%2B2+%29+ ALIGN=MIDDLE  ALT=\"+120%2Fx+-+2%2F3+=+120%2F%28+x%2B2+%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=+3%2Ax%2A%28+x%2B2+%29+ ALIGN=MIDDLE  ALT=\"+3%2Ax%2A%28+x%2B2+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+120%2A3%2A%28+x%2B2+%29+-+2x%2A%28+x%2B2+%29+=+120%2A3%2Ax+ ALIGN=MIDDLE  ALT=\"+120%2A3%2A%28+x%2B2+%29+-+2x%2A%28+x%2B2+%29+=+120%2A3%2Ax+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+360%2A%28+x%2B2+%29+-+2x%5E2+-+4x+=+360x+ ALIGN=MIDDLE  ALT=\"+360%2A%28+x%2B2+%29+-+2x%5E2+-+4x+=+360x+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+360x+%2B+720+-+2x%5E2+-+4x+=+360x+ ALIGN=MIDDLE  ALT=\"+360x+%2B+720+-+2x%5E2+-+4x+=+360x+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+2x%5E2+%2B+4x+-+720+=+0+ ALIGN=MIDDLE  ALT=\"+2x%5E2+%2B+4x+-+720+=+0+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x%5E2+%2B2x+-+360+=+0+ ALIGN=MIDDLE  ALT=\"+x%5E2+%2B2x+-+360+=+0+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "complete the square<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x%5E2+%2B+2x+%2B+1+=+361+ ALIGN=MIDDLE  ALT=\"+x%5E2+%2B+2x+%2B+1+=+361+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+x+%2B+1+%29%5E2+=+19%5E2+ ALIGN=MIDDLE  ALT=\"+%28+x+%2B+1+%29%5E2+=+19%5E2+\"   DISABLED_style= \"max-width:90%; height:auto;\" >{<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+%2B+1+=+19+ ALIGN=MIDDLE  ALT=\"+x+%2B+1+=+19+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+18+ ALIGN=MIDDLE  ALT=\"+x+=+18+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Saly's ave speed was 18 km/hr\r<BR>\n" );
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document.write( "\n" );
document.write( " </SPAN>\n" );
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