document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=101581>Question 101581</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/9780073406152/algebrahomeworkh>Beginning and intermedicate algebra</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> At top speed, my car could travel 175 miles in a given amount of time. After upgrading the engine to my car its top speed by 20 mph and it could travel 210 miles in the same amount of time. What was the top speed of my car pre-upgrade?\r<BR>\n" );
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document.write( "My teacher wrote this problem himself and I couldnt find an example of this problem in my book. Therefore, I dont know where to start. Please help me so that I can do this problem in the future. Thank you!! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #73943 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=73943\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> t=d/r ... time is the same, distance and rate change\r<BR>\n" );
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document.write( "t=175/r ... t=210/(r+20) ... <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=175%2Fr=210%2F%28r%2B20%29 ALIGN=MIDDLE  ALT=\"175%2Fr=210%2F%28r%2B20%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > ... 175(r+20)=210r\r<BR>\n" );
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document.write( "175r+3500=210r ... 3500=35r ... 100=r </SPAN>\n" );
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