document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=187617>Question 187617</A>: <I><SPAN STYLE=\"word-break: break-all;\"> flight 725 left new york at 10:28am flying north. flight 245 left same airport at 11:18am flying south at 125kmh less than 3 times the speed of flight 725. at 1:06pm they are 1030 km apart. what is average rate of speed for flight 245? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #140672 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=140672\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> flight 725 left new york at 10:28am flying north. flight 245 left same airport<BR>\n" );
document.write( " at 11:18am flying south at 125kmh less than 3 times the speed of flight 725.<BR>\n" );
document.write( " at 1:06pm they are 1030 km apart. what is average rate of speed for flight 245?<BR>\n" );
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document.write( "Let s = speed of flt 725<BR>\n" );
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document.write( "then is says,\"flt 245 flies 125kmh less than 3 times the speed of flight 725.\"<BR>\n" );
document.write( "therefore:<BR>\n" );
document.write( "(3s-125) = speed of flt 245<BR>\n" );
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document.write( "Travel times of both aircraft (Change 1:06 to 13:06):<BR>\n" );
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document.write( "Flt 725: 13:06 - 10:28 = 2 hr 38 min ~ 2.633 hrs<BR>\n" );
document.write( "Flt 245: 13:06 - 11:18 = 1 hr 48 min = 1.8 hrs<BR>\n" );
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document.write( "Write a dist equation: dist = time * speed<BR>\n" );
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document.write( "Flt 725 dist + Flt 245 dist = 1030 km<BR>\n" );
document.write( "2.633s + 1.8(3s-125) = 1030<BR>\n" );
document.write( "2.633s + 5.4s - 225 = 1030<BR>\n" );
document.write( "2.633s + 5.4s = 1030 + 225<BR>\n" );
document.write( "8.033s = 1255<BR>\n" );
document.write( "s = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1255%2F8.033 ALIGN=MIDDLE  ALT=\"1255%2F8.033\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "s = 156.23 km/hr is the speed of flt 725<BR>\n" );
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document.write( "but they want the speed of 245<BR>\n" );
document.write( "3(156.23) - 125 = 343.69 km/hr is the speed of flt 245<BR>\n" );
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document.write( "Check solution by finding the distance of each at 1:06<BR>\n" );
document.write( "2.633 * 156.23 =411.35 <BR>\n" );
document.write( "1.8 *  343.69 = 618.64<BR>\n" );
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document.write( "total distance = 1029.99 ~ 1030; confirms our solutions </SPAN>\n" );
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