document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=195311>Question 195311</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/9780073533438/algebrahomeworkh>Introductory Algebra</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> If Bill drives from his home to his office at 40 miles per hour, he arrives 5 minutes early. If he drives at 30 miles per hour, he arrives 5 minutes late. How far is it from his home to his office? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #146501 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=146501\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If Bill drives from his home to his office at 40 miles per hour, he arrives 5<BR>\n" );
document.write( "minutes early. <BR>\n" );
document.write( "If he drives at 30 miles per hour, he arrives 5 minutes late. How far is it from his home to his office?<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Just assume, the difference in the two trips is 10 min; <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F6 ALIGN=MIDDLE  ALT=\"1%2F6\"   DISABLED_style= \"max-width:90%; height:auto;\" > hr<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Let t = time at 40 mph<BR>\n" );
document.write( "then<BR>\n" );
document.write( "(t + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F6 ALIGN=MIDDLE  ALT=\"1%2F6\"   DISABLED_style= \"max-width:90%; height:auto;\" >) = time at 30 mph<BR>\n" );
document.write( "Write distance equation; dist = speed * time<BR>\n" );
document.write( "40t = 30(t+<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F6 ALIGN=MIDDLE  ALT=\"1%2F6\"   DISABLED_style= \"max-width:90%; height:auto;\" >)<BR>\n" );
document.write( "40t = 30t + 5<BR>\n" );
document.write( ":<BR>\n" );
document.write( "40t - 30t = 5<BR>\n" );
document.write( ":<BR>\n" );
document.write( "10t = 5<BR>\n" );
document.write( "t = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5%2F10 ALIGN=MIDDLE  ALT=\"5%2F10\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "t = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F2 ALIGN=MIDDLE  ALT=\"1%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" > hr<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Find the distance<BR>\n" );
document.write( "40 * <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F2 ALIGN=MIDDLE  ALT=\"1%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 20 miles<BR>\n" );
document.write( "Check the solution by finding the distance at 30 mph<BR>\n" );
document.write( "30 * <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F2%2B1%2F6 ALIGN=MIDDLE  ALT=\"1%2F2%2B1%2F6\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "30 * <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4%2F6 ALIGN=MIDDLE  ALT=\"4%2F6\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 5 * 4 = 20 mi<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );