document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=175420>Question 175420</A>: <I><SPAN STYLE=\"word-break: break-all;\"> an airplane travwl 100km/h then another airplane. In 4 hours the faster airplanes travel the same distance as the slower airplane travel in 6 hours. Find the rate of the faster airplane. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #130482 by </B><A HREF=/tutors/aboutme.mpl?userid=rapaljer><B>rapaljer(4671)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rapaljer><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=rapaljer><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=130482\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let x = speed of the slower plane<BR>\n" );
document.write( "x+100 = speed of the faster plane\r<BR>\n" );
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document.write( "Distance = Rate * Time\r<BR>\n" );
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document.write( "4(x+100)=6x<BR>\n" );
document.write( "4x+400=6x <BR>\n" );
document.write( "400=2x<BR>\n" );
document.write( "x= 200 mph slower plane<BR>\n" );
document.write( "x+100 = 300 mph faster plane\r<BR>\n" );
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document.write( "Check:  Faster plane (300 mph) in 4 hours travels 1200 miles<BR>\n" );
document.write( "Slower plane (200 mph) in 6 hours travels 1200 miles.\r<BR>\n" );
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document.write( "R^2 </SPAN>\n" );
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