document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=901177>Question 901177</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Imogene's car traveled 210 mi averaging a certain speer. If the car had gone 5mph faster, the trip would have taken 1 hour less. Find the average speed. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #546510 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=546510\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Imogene's car traveled 210 mi averaging a certain speer. If the car had gone 5mph faster, the trip would have taken 1 hour less. Find the average speed.<BR>\n" );
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document.write( "Actual DATA:<BR>\n" );
document.write( "distance = 210 miles ; time = x hrs ; rate = d/t = 210/x mph<BR>\n" );
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document.write( "Modified DATA:<BR>\n" );
document.write( "distance = 210 miles ; time = x-1 hrs ; rate = d/t = 210/(x-1) mph<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "210/(x-1) - 210/x = 5 mph<BR>\n" );
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document.write( "210x - 210(x-1) = 5x(x-1)<BR>\n" );
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document.write( "210 = 5x^2 - 5x<BR>\n" );
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document.write( "42 = x^2 - x<BR>\n" );
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document.write( "x^2 - x - 42 = 0<BR>\n" );
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document.write( "Factor::<BR>\n" );
document.write( "(x-7)(x+6) = 0<BR>\n" );
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document.write( "Positive solution::<BR>\n" );
document.write( "Ans:: x = 7 hours<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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document.write( " </SPAN>\n" );
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