document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=398684>Question 398684</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A commuter plane provides transportation from an international airport to surrounding cities. One commuter plane averaged 280 mph flying to a city and 120 mph returning to the international airport. The total flying time was 3 h. Find the distance between the two airports. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #282518 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=282518\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A commuter plane provides transportation from an international airport to surrounding cities.<BR>\n" );
document.write( " One commuter plane averaged 280 mph flying to a city and 120 mph returning to the international airport.<BR>\n" );
document.write( " The total flying time was 3 h. Find the distance between the two airports.<BR>\n" );
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document.write( "Let d = distance between airports<BR>\n" );
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document.write( "Write a time equation, time = dist/speed<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%2F280 ALIGN=MIDDLE  ALT=\"d%2F280\"   DISABLED_style= \"max-width:90%; height:auto;\" > + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%2F120 ALIGN=MIDDLE  ALT=\"d%2F120\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 3 <BR>\n" );
document.write( "Multiply by LCM of 280 and 120, 840:<BR>\n" );
document.write( "840*<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%2F280 ALIGN=MIDDLE  ALT=\"d%2F280\"   DISABLED_style= \"max-width:90%; height:auto;\" > + 840*<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%2F120 ALIGN=MIDDLE  ALT=\"d%2F120\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 3(340)<BR>\n" );
document.write( "Clear the denominators, and you have<BR>\n" );
document.write( "3d + 7d = 2520<BR>\n" );
document.write( "10d = 2520<BR>\n" );
document.write( "d = 252 mi between airports<BR>\n" );
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document.write( "Check this, find the time for each trip:<BR>\n" );
document.write( "252/280  + 252/120 =<BR>\n" );
document.write( ".9 + 2.1 = 3 hrs <BR>\n" );
document.write( " </SPAN>\n" );
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