document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=786176>Question 786176</A>: <I><SPAN STYLE=\"word-break: break-all;\"> After driving 126mi, Syd found that the drive would have taken 1 hr. less time by increasing the speed by 8 mph. What was the actual speed? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #477831 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=477831\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> After driving 126mi, Syd found that the drive would have taken 1 hr. less time by increasing the speed by 8 mph. What was the actual speed?<BR>\n" );
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document.write( "Actual DATA:<BR>\n" );
document.write( "distance = 126 miles ; rate = x mph ; time = 126/x hours<BR>\n" );
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document.write( "\"If\" DATA:<BR>\n" );
document.write( "distance = 126 miles ; rate = x+8 mph ; time = 126/(x+8) hours<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "126/x - 126/(x+8) = 1 hr<BR>\n" );
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document.write( "126(x+8) - 126x = x(x+8)<BR>\n" );
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document.write( "x^2 + 8x - 8*126 = 0<BR>\n" );
document.write( "x = 36 mph (actual speed)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );