document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=525634>Question 525634</A>: <I><SPAN STYLE=\"word-break: break-all;\"> At 10:00 a.m. two planes leave an airport. If the northbound plane flies at 280 mph and the southbound at 320 mph, at what time will they be 1,000 miles apart?\r<BR>\n" );
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document.write( "Which equation can be used to solve for t, the time it takes the planes to be 1,000 miles apart? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #348165 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=348165\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> At 10:00 a.m. two planes leave an airport. If the northbound plane flies at 280 mph and the southbound at 320 mph, at what time will they be 1,000 miles apart?\r<BR>\n" );
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document.write( "Which equation can be used to solve for t, the time it takes the planes to be 1,000 miles apart?<BR>\n" );
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document.write( "Their speeds are added.  280 + 320 = 600 mi/hr<BR>\n" );
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document.write( "d = r*t<BR>\n" );
document.write( "t = d/r\r<BR>\n" );
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