document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=211587>Question 211587</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/9780495558880/algebrahomeworkh></A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Can you please help me with this uniform motion problem? If the speed were increased by 10mph, a 420 mile trip would take 1 hr less time. How long will the trip take at the slower speed? Please show me all the steps and please get back to me before Tues. 10am. <BR>\n" );
document.write( "Thank you guys </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #159876 by </B><A HREF=/tutors/aboutme.mpl?userid=scott8148><B>scott8148(6628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=scott8148><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=scott8148><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=159876\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> rate = distance / time\r<BR>\n" );
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document.write( "rate + 10 = distance / (time - 1)\r<BR>\n" );
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document.write( "(distance / time) + 10 = distance / (time - 1) ___ (420 / t) + 10 = 420 / (t - 1)\r<BR>\n" );
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document.write( "(420 + 10t) / t = 420 / (t - 1)\r<BR>\n" );
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document.write( "multiplying by t(t - 1) ___ 10t^2 + 410t -420 = 420t\r<BR>\n" );
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document.write( "subtracting 420t and dividing by 10 ___ t^2 - t - 42 = 0\r<BR>\n" );
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document.write( "factoring ___ (t + 6)(t - 7) = 0\r<BR>\n" );
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document.write( "t + 6 = 0 ___ t = -6 ___ negative value not realistic\r<BR>\n" );
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document.write( "t - 7 = 0 ___ t = 7  </SPAN>\n" );
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