document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=669964>Question 669964</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A lady drove to a city 30 miles away to shop and returned home in the evening. She spent15 minutes longer driving the return trip than in the going, and she drover three-fourths as fast when returning as she did when going to the city. How long did it take her to drive to the city? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #416712 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=416712\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A lady drove to a city 30 miles away to shop and returned home in the evening.<BR>\n" );
document.write( " She spent15 minutes longer driving the return trip than in the going, and she<BR>\n" );
document.write( " drover three-fourths as fast when returning as she did when going to the city.<BR>\n" );
document.write( " How long did it take her to drive to the city?<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Find the speed first<BR>\n" );
document.write( "let s = speed to the city<BR>\n" );
document.write( "then<BR>\n" );
document.write( ".75s = return speed<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Change 15 min to .25 hr<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Write a time equation; time = dist/speed<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=30%2Fs ALIGN=MIDDLE  ALT=\"30%2Fs\"   DISABLED_style= \"max-width:90%; height:auto;\" > + .25 = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=30%2F%28.75s%29 ALIGN=MIDDLE  ALT=\"30%2F%28.75s%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "multiply by 3s, to clear the denominators, results<BR>\n" );
document.write( "3(30) + 3s(.25) = 4(30)<BR>\n" );
document.write( "90 + .75s = 120<BR>\n" );
document.write( ".75s = 120 - 90<BR>\n" );
document.write( ".75s = 30<BR>\n" );
document.write( "s = 30/.75<BR>\n" );
document.write( "s = 40 mph to the city<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Find the time<BR>\n" );
document.write( "30/40 = .75 hrs or 45 min to drive to the city\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );