document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1009848>Question 1009848</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a plane can fly 980 miles in the same time it takes a car to go 350 miles. If the car travels 90 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 #628322 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=628322\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let's call the rate of the plane, r.  thus the rate of the car is r - 90.<BR>\n" );
document.write( "We know that in general rt = d, or t = d/r.<BR>\n" );
document.write( "Since the times are equal, we can then set up a proportion to solve...<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=980%2Fr+=+350%2F%28r-90%29 ALIGN=MIDDLE  ALT=\"980%2Fr+=+350%2F%28r-90%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Now cross-multiply and solve<BR>\n" );
document.write( "980(r-90) = 350r<BR>\n" );
document.write( "980r - 88200 = 350r<BR>\n" );
document.write( "-88200 = -630r<BR>\n" );
document.write( "r = 140 mph </SPAN>\n" );
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