document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1002420>Question 1002420</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Michael drove his car to the foothills @ 70mph. Once he arrived @the foothills he biked 30mph. His total trip took 4 hours, and his total distance was 140 miles. How long did he drive his car? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #619351 by </B><A HREF=/tutors/aboutme.mpl?userid=fractalier><B>fractalier(6550)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=fractalier><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=fractalier><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=619351\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Call the time he drove his car, t.<BR>\n" );
document.write( "Then the time he rode the bike would be 4-t.<BR>\n" );
document.write( "Thus we can write<BR>\n" );
document.write( "70t + 30(4-t) = 140<BR>\n" );
document.write( "70t + 120 - 30t = 140<BR>\n" );
document.write( "40t = 20<BR>\n" );
document.write( "t = .5 hours </SPAN>\n" );
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