document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=182644>Question 182644</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Dawn’s SUV gets 14 miles per gallon (mpg) in city driving and 23 mpg in highway driving.  The SUV is driven 290 miles on 15 gallons of gasoline.  How many miles were driven in the city and how many miles were driven on the highway? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #137128 by </B><A HREF=/tutors/aboutme.mpl?userid=Mathtut><B>Mathtut(3670)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Mathtut><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=137128\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Dawn’s SUV gets 14 miles per gallon (mpg) in city driving and 23 mpg in highway driving.  The SUV is driven 290 miles on 15 gallons of gasoline.  How many miles were driven in the city and how many miles were driven on the highway?<BR>\n" );
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document.write( "let c and h be the number of gallons used in the city and highway respectively<BR>\n" );
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document.write( "c+h=15.............eq 1<BR>\n" );
document.write( "14c+23h=290........eq 2<BR>\n" );
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document.write( "rewrite eq 1 to c=15-h and plug it into eq 2<BR>\n" );
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document.write( "14(15-h)+23h=290<BR>\n" );
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document.write( "210-14h+23h=290<BR>\n" );
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document.write( "9h=80<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h=8.89 ALIGN=MIDDLE  ALT=\"h=8.89\"   DISABLED_style= \"max-width:90%; height:auto;\" >number of gallons used on highway<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=c=15-h=6.11 ALIGN=MIDDLE  ALT=\"c=15-h=6.11\"   DISABLED_style= \"max-width:90%; height:auto;\" >number of gallons use in city<BR>\n" );
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document.write( "appx miles driven in city 14(6.11)=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%2885.53%29 ALIGN=MIDDLE  ALT=\"highlight%2885.53%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "appx miles driven on hiwy 23(8.89)=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28204.47%29 ALIGN=MIDDLE  ALT=\"highlight%28204.47%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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