document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1070251>Question 1070251</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Airplane 1 leaves city A for city B at the same time Airplane 2 leaves city B for city A. The distance from city A to city B is 565 miles. If Airplane 1 travels at 560 miles per hour and Airplane 2 travels at 570 miles per&#8203; hour, how long into their flights will the two planes pass each&#8203; other?\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #685378 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52781)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ikleyn><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=ikleyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=685378\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
document.write( "Airplane 1 leaves city A for city B at the same time Airplane 2 leaves city B for city A. The distance from city A to city B is 565 miles. <BR>\n" );
document.write( "If Airplane 1 travels at 560 miles per hour and Airplane 2 travels at 570 miles per&#8203; hour, how long into their flights <BR>\n" );
document.write( "will the two planes pass each&#8203; other?\r<BR>\n" );
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document.write( "<PRE STYLE=\"white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;\">\r\n" );
document.write( "t = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=565%2F%28560%2B570%29 ALIGN=MIDDLE  ALT=\"565%2F%28560%2B570%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=565%2F1130 ALIGN=MIDDLE  ALT=\"565%2F1130\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 0.5 of an hour = 30 minutes.   (*)\r\n" );
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document.write( "The numerator 565 is the distance, in miles;\r\n" );
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document.write( "the denominator 560 + 570 = 1130 is the relative speed of the two planes, or the rate of decreasing the distance between them.\r\n" );
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document.write( "The formula (*) which I used is the standard formula  t = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=distance%2FRate ALIGN=MIDDLE  ALT=\"distance%2FRate\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r\n" );
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document.write( "On such problems, see the introductory lesson\r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;- <A  rel=nofollow HREF=http://www.algebra.com/algebra/homework/word/travel/Travel-and-Distance-problems.lesson>Travel and Distance problems</A> \r<BR>\n" );
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document.write( "in this site.\r<BR>\n" );
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document.write( "There is a bunch of lessons on Travel and Distance in this site.\r<BR>\n" );
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document.write( "See the online textbook \r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;- <A  rel=nofollow HREF=https://www.algebra.com/algebra/homework/quadratic/lessons/ALGEBRA-I-YOUR-ONLINE-TEXTBOOK.lesson>ALGEBRA-I - YOUR ONLINE TEXTBOOK</A>.\r<BR>\n" );
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document.write( "under the topic \"<U>Travel and distance</U>\".\r<BR>\n" );
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