document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=455551>Question 455551</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Here's my question.\r<BR>\n" );
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document.write( "\"An aircraft travels at a speed of 550mph during the 1st half of it's journey and 500mph during the second half of it's journey. Total flight time is 05:00 hours. Based on this determine the distance between the airport of departure and arrival.\"\r<BR>\n" );
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document.write( "Sounds straightforward enough, my answer was 2625 miles. However the correct answer is 2619 miles?! I need clarification here, am I right or do I need to loose 6 miles somehow?\r<BR>\n" );
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document.write( "Pete M </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #312745 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=312745\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> An aircraft travels at a speed of 550mph during the 1st half of it's journey and<BR>\n" );
document.write( " 500mph during the second half of it's journey.<BR>\n" );
document.write( " Total flight time is 05:00 hours.<BR>\n" );
document.write( " Based on this determine the distance between the airport of departure and arrival.\" <BR>\n" );
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document.write( "Let d = distance between the airports<BR>\n" );
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document.write( "Write a time equation: time = dist/speed<BR>\n" );
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document.write( "550mph time + 500mph time = 5 hrs<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28.5d%29%2F550 ALIGN=MIDDLE  ALT=\"%28.5d%29%2F550\"   DISABLED_style= \"max-width:90%; height:auto;\" > + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28.5d%29%2F500 ALIGN=MIDDLE  ALT=\"%28.5d%29%2F500\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 5<BR>\n" );
document.write( "multiply by 5500,<BR>\n" );
document.write( "5500*<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28.5d%29%2F550 ALIGN=MIDDLE  ALT=\"%28.5d%29%2F550\"   DISABLED_style= \"max-width:90%; height:auto;\" > + 5500<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28.5d%29%2F500 ALIGN=MIDDLE  ALT=\"%28.5d%29%2F500\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 5500(5)<BR>\n" );
document.write( "cancel the denominators<BR>\n" );
document.write( "10(.5d) + 11(.5d) = 27500<BR>\n" );
document.write( "5d + 5.5d = 27500<BR>\n" );
document.write( "10.5d = 27500<BR>\n" );
document.write( "d = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=27500%2F10.5 ALIGN=MIDDLE  ALT=\"27500%2F10.5\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "d = 2619 mi<BR>\n" );
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document.write( "You can prove this to yourself, find the time at each speed<BR>\n" );
document.write( "1309.5/550 = 2.38 hrs<BR>\n" );
document.write( "1309.5/500 = 2.62 hrs<BR>\n" );
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document.write( "total time:  5.0 hrs<BR>\n" );
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