document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=605488>Question 605488</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Kathryn drove her rig 3 hours before dawn and 4 hours after dawn. Her average speed was 6 miles per hour more in the dark and she covered 410 miles altogether.  What was her speed after dawn in miles per hour? \r<BR>\n" );
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document.write( "I need to know teh correct formula as well as how to find this answer.  Thank you.<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 #381711 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=381711\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Kathryn drove her rig 3 hours before dawn and 4 hours after dawn. Her average speed was 6 miles per hour more in the dark and she covered 410 miles altogether. What was her speed after dawn in miles per hour? <BR>\n" );
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document.write( "Before dawn DATA:<BR>\n" );
document.write( "time = 3 hrs ; rate = x+6 mph ; distance = 3x+18 miles<BR>\n" );
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document.write( "After dawn DATA:<BR>\n" );
document.write( "time = 4 hrs ; rate = x mph ; distance = 4x miles<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "3x+18 + 4x = 410 miles<BR>\n" );
document.write( "7x = 392 miles<BR>\n" );
document.write( "x = 56 mph (speed after dawn)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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