document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1016229>Question 1016229</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A plane can fly 680 miles in the same time as it takes a car to go 280 miles. If the car travels 100 mph slower than the plane, find the speed of the plane.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #632660 by </B><A HREF=/tutors/aboutme.mpl?userid=fractalier><B>fractalier(6550)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=fractalier><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=fractalier><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=632660\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Starting by calling the rate of the car r, the rate of the plane r+100 and with rt=d, we can write<BR>\n" );
document.write( "rt = 280<BR>\n" );
document.write( "or t = 280/r<BR>\n" );
document.write( "(r+100)t = 680<BR>\n" );
document.write( "or t = 680/(r+100)<BR>\n" );
document.write( "Set these equal and get<BR>\n" );
document.write( "280/r = 680/(r+100)<BR>\n" );
document.write( "Now cross-multiply and solve<BR>\n" );
document.write( "680r = 280r + 28000<BR>\n" );
document.write( "400r = 28000<BR>\n" );
document.write( "r = 70 mph<BR>\n" );
document.write( "r+100 = 170 mph, the rate of the plane... </SPAN>\n" );
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