document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=812254>Question 812254</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A plane leaves Chicago and flies 750 miles to New York. If it takes 2.5 hours to get to New York flying against wind, but only 2 hours to fly back to Chicago, what is the plane's rate of speed?\r<BR>\n" );
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document.write( "I absolutely do not know how to do rate, distance, and time, so this problem makes no sense to me whatsoever. Therefore, I can't quite think of any equations to help solve this problem.\r<BR>\n" );
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document.write( "Thanks for your time!(: </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #489064 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=489064\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You can make your life a lot easier if you learn these three simple formulas<BR>\n" );
document.write( "Dist = speed * time<BR>\n" );
document.write( "d = s*t<BR>\n" );
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document.write( "Speed = dist/time<BR>\n" );
document.write( "s = d/t<BR>\n" );
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document.write( "Time = dist/speed<BR>\n" );
document.write( "t = d/s<BR>\n" );
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document.write( "A plane leaves Chicago and flies 750 miles to New York.<BR>\n" );
document.write( " If it takes 2.5 hours to get to New York flying against wind,<BR>\n" );
document.write( " but only 2 hours to fly back to Chicago,<BR>\n" );
document.write( " what is the plane's rate of speed?<BR>\n" );
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document.write( "let s = speed of the plane in still air<BR>\n" );
document.write( "let w = the speed of the wind<BR>\n" );
document.write( "then<BR>\n" );
document.write( "(s-w) = ground speed against the wind<BR>\n" );
document.write( "(s+w) = ground speed with the wind<BR>\n" );
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document.write( "Write a distance equation for each way<BR>\n" );
document.write( "2.5(s-w) = 750<BR>\n" );
document.write( " 2(s+w)  = 750<BR>\n" );
document.write( "Simplify both equation, divide the first by 2.5, the 2nd by 2<BR>\n" );
document.write( "s - w = 300<BR>\n" );
document.write( "s + w = 375<BR>\n" );
document.write( "---------------adding eliminates w, find s<BR>\n" );
document.write( "2s = 675<BR>\n" );
document.write( "s = 337.5 mph planes speed in still air </SPAN>\n" );
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