document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1140927>Question 1140927</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Maxis taking a cross-country road trip. Gas prices vary as the friends travel across the US from $4 dollars per gallon on the east coast, to $3 in the mid-US, to $5 on the west coast. If they used twice as much gas in the mid-US than on either coasts combined, and they spend $515 on gas to purchased 150 gallons of gas, how many gallons of gas did they buy at each price? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #761459 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=761459\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x=gallons of gas in midwest<BR>\n" );
document.write( "150-x on both coasts<BR>\n" );
document.write( "x=2(150-x)=300-2x<BR>\n" );
document.write( "3x=300<BR>\n" );
document.write( "x=100 gallons in midwest or $300 ANSWER<BR>\n" );
document.write( "That leaves 50 gallons in both coasts<BR>\n" );
document.write( "w=west<BR>\n" );
document.write( "e=east=50-w<BR>\n" );
document.write( "5w+4(50-w)=215, 515-300.<BR>\n" );
document.write( "5w+200-4w=215<BR>\n" );
document.write( "w=15 gallons west coast ($75) ANSWER<BR>\n" );
document.write( "e=35 gallons ($140) ANSWER<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );