document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=28741>Question 28741</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Rob drives 550 miles home in one hour less than it takes Mary to drive the same route. Rob's average speed is 8 mph faster than Mary's. How fast does each drive.\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #15680 by </B><A HREF=/tutors/aboutme.mpl?userid=Paul><B>Paul(988)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Paul><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=15680\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> MAry's speed = x<BR>\n" );
document.write( "Rob's = x+8<BR>\n" );
document.write( "Total milies driven by them both = 550.<BR>\n" );
document.write( "time taken = one hour less = -1 so x+8-x=1\r<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=550%2F%28x%2B8%29-550%2Fx=1 ALIGN=MIDDLE  ALT=\"550%2F%28x%2B8%29-550%2Fx=1\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "550[(x+8)-(x)]=(x)(x+8)<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=550%288%29=x%5E2%2B8x ALIGN=MIDDLE  ALT=\"550%288%29=x%5E2%2B8x\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4400=x%5E2%2B8x ALIGN=MIDDLE  ALT=\"4400=x%5E2%2B8x\"   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%2B8x-4400=0 ALIGN=MIDDLE  ALT=\"x%5E2%2B8x-4400=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+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+ ALIGN=MIDDLE  ALT=\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=%28-8%2B-sqrt%28%288%5E2%29-4%2A1%2A-4400%29%29%2F%282%2A1%29 ALIGN=MIDDLE  ALT=\"x=%28-8%2B-sqrt%28%288%5E2%29-4%2A1%2A-4400%29%29%2F%282%2A1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "simplfy get two solutions.<BR>\n" );
document.write( "Delete the negative answer.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=4%282sqrt%2869-1%29%29 ALIGN=MIDDLE  ALT=\"x=4%282sqrt%2869-1%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "x=58 (rounded)<BR>\n" );
document.write( "58+8=66\r<BR>\n" );
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document.write( "Hence, Mary's speed is 58mph and Rob's speed is 66 mph.<BR>\n" );
document.write( "Paul. </SPAN>\n" );
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