document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=224308>Question 224308</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Two planes leave an airport at 8 a.m., one flying north at 480 km/h and the other flying south at 520 km/h. At what time will they be 3000 km apart? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #167588 by </B><A HREF=/tutors/aboutme.mpl?userid=drj><B>drj(1380)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=drj><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=drj><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=167588\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Two planes leave an airport at 8 a.m., one flying north at 480 km/h and the other flying south at 520 km/h. At what time will they be 3000 km apart?\r<BR>\n" );
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document.write( "Step 1.  Let x be the amount of time for the planes to be 3000 km.\r<BR>\n" );
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document.write( "Step 2.  Let distance=speed*time.\r<BR>\n" );
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document.write( "Step 3.  Let 480x be the distance traveled at 480 km/h.\r<BR>\n" );
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document.write( "Step 4.  Let 520x be the distance traveled at 520 km/h.\r<BR>\n" );
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document.write( "Step 5.  Then 480x+520x=3000 be the total distance of 3000 km traveled by both planes.\r<BR>\n" );
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document.write( "Step 6.  Solving the equation in Step 5 yields the following steps\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1000x=3000 ALIGN=MIDDLE  ALT=\"1000x=3000\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Divide 1000 to both sides of the equation\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1000x%2F1000=3000%2F1000 ALIGN=MIDDLE  ALT=\"1000x%2F1000=3000%2F1000\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=3 ALIGN=MIDDLE  ALT=\"x=3\"   DISABLED_style= \"max-width:90%; height:auto;\" > hours.   So 3 hours ahead of 10 a.m. is 1 p.m.\r<BR>\n" );
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document.write( "Step 7.  ANSWER:  The planes will be 3000 km at 1 p.m.\r<BR>\n" );
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document.write( "I hope the above steps were helpful. \r<BR>\n" );
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document.write( "For free Step-By-Step Videos on Introduction to Algebra, please visit http://www.FreedomUniversity.TV/courses/IntroAlgebra or for Trigonometry visit http://www.FreedomUniversity.TV/courses/Trigonometry.\r<BR>\n" );
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document.write( "And good luck in your studies!\r<BR>\n" );
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document.write( "Respectfully,<BR>\n" );
document.write( "Dr J\r<BR>\n" );
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