document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1040220>Question 1040220</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Jerry drove to the airport at an average speed of 45 miles per hour. He returned home along the same route, but traffic slowed his average speed on the return trip to 30 miles per hour. If the total travel time was 2 hours 30 minutes, find in miles the distance from Jerry's house to the airport. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #655018 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=655018\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Jerry drove to the airport at an average speed of 45 miles per hour.<BR>\n" );
document.write( " He returned home along the same route, but traffic slowed his average speed on the return trip to 30 miles per hour.<BR>\n" );
document.write( " If the total travel time was 2 hours 30 minutes, find in miles the distance from Jerry's house to the airport.<BR>\n" );
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document.write( "let d = the distance to the airport<BR>\n" );
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document.write( "Write a time equation; time = dist/speed<BR>\n" );
document.write( "time there + time back = 2.5 hrs<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%2F45 ALIGN=MIDDLE  ALT=\"d%2F45\"   DISABLED_style= \"max-width:90%; height:auto;\" > + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%2F30 ALIGN=MIDDLE  ALT=\"d%2F30\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 2.5<BR>\n" );
document.write( "multiply by 90, cancel the denominators and you have<BR>\n" );
document.write( "2d + 3d = 90(2.5)<BR>\n" );
document.write( "5d = 225<BR>\n" );
document.write( "d = 45 miles to the airport<BR>\n" );
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document.write( ";<BR>\n" );
document.write( "Confirm this find the actual time each way<BR>\n" );
document.write( "45/45 = 1.0 hrs<BR>\n" );
document.write( "45/30 = 1.5 hrs<BR>\n" );
document.write( "----------------<BR>\n" );
document.write( "total time: 2.5 hrs </SPAN>\n" );
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