document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=64716>Question 64716</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An airline starts off on a trip with all engines running. It is going at a rate of 900 km per hour, after x hours it shuts down one engine and reduces its speed to 700 km per hour. The trip is a total of 3 hours long\r<BR>\n" );
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document.write( "How lonng should the pilot fly before shutting down one engine in order to go a total distance of 2352 in 3 hours. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #45264 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=45264\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> An airline starts off on a trip with all engines running. It is going at a rate of 900 km per hour, after x hours it shuts down one engine and reduces its speed to 700 km per hour. The trip is a total of 3 hours long<BR>\n" );
document.write( "How long should the pilot fly before shutting down one engine in order to go a total distance of 2352 in 3 hours.\r<BR>\n" );
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document.write( "900 km/hr DATA:<BR>\n" );
document.write( "rate= 900 km/hr; distance = x km ; time= d/r= x/900 hrs<BR>\n" );
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document.write( "700 km/hr DATA:<BR>\n" );
document.write( "rate= 700 km/hr; distance = \"2352-x\" km ; time = d/r = (2352-x)/700 hrs<BR>\n" );
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document.write( "EQUATION:<BR>\n" );
document.write( "time + time = 3 hrs<BR>\n" );
document.write( "x/900 + (2352-x)/700 = 3<BR>\n" );
document.write( "700x +900(2352-x)=3*900*700<BR>\n" );
document.write( "700x+2116800-900x=1890000<BR>\n" );
document.write( "-200x=--226800<BR>\n" );
document.write( "x=1134 km at 900 km/hr<BR>\n" );
document.write( "2352-x=1218 km at 700 km/hr<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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