document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=207010>Question 207010</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A car gets 30 miles to the gallon of gas on the highway and 20 miles to the gallon for local driving.  In the first week of October, the car was driven 180 miles on the highway, if the car's average gas mileage for that week was 26 miles to the gallon how many miles of local driving was the car used for that week? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #156552 by </B><A HREF=/tutors/aboutme.mpl?userid=MathTherapy><B>MathTherapy(10552)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathTherapy><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=MathTherapy><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=156552\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let the amount of local miles traveled during the 1st week of October be L\r<BR>\n" );
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document.write( "Then the total amount of miles traveled in that 1st week is 180 + L\r<BR>\n" );
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document.write( "Then the amount of gas used to travel locally is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=L%2F20 ALIGN=MIDDLE  ALT=\"L%2F20\"   DISABLED_style= \"max-width:90%; height:auto;\" >, since the car \r<BR>\n" );
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document.write( "gives 20 miles per gallon, locally \r<BR>\n" );
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document.write( "And, the total amount of gas utilized that week was:  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=L%2F20+%2B+180%2F30 ALIGN=MIDDLE  ALT=\"L%2F20+%2B+180%2F30\"   DISABLED_style= \"max-width:90%; height:auto;\" > or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=L%2F20+%2B+6 ALIGN=MIDDLE  ALT=\"L%2F20+%2B+6\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Therefore, (total amount of miles traveled) / (total amount of gas utilized) = average weekly consumption, or: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28180+%2B+L%29%2F%28L%2F20+%2B+6%29=26 ALIGN=MIDDLE  ALT=\"%28180+%2B+L%29%2F%28L%2F20+%2B+6%29=26\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28180+%2B+L%29%2F%28%28L+%2B+120%29%2F20%29=26 ALIGN=MIDDLE  ALT=\"%28180+%2B+L%29%2F%28%28L+%2B+120%29%2F20%29=26\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=180+%2B+L+=+%2826L+%2B+3120%29%2F20 ALIGN=MIDDLE  ALT=\"180+%2B+L+=+%2826L+%2B+3120%29%2F20\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
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document.write( "3600 + 20L = 26L + 3120\r<BR>\n" );
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document.write( "-6L = - 480\r<BR>\n" );
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document.write( "L = 80\r<BR>\n" );
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document.write( "Therefore, the amount of local miles driven was: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%2880%29 ALIGN=MIDDLE  ALT=\"highlight_green%2880%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Check:\r<BR>\n" );
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document.write( "Total miles driven in 1 st week = 260 (180 highway + 80 local)\r<BR>\n" );
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document.write( "Total gas utilized in 1st week: 10 (6 highway + 4 local)\r<BR>\n" );
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document.write( "It follows that average gas consumption for 1st week was <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=260%2F10 ALIGN=MIDDLE  ALT=\"260%2F10\"   DISABLED_style= \"max-width:90%; height:auto;\" >. or 26\r<BR>\n" );
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document.write( " </SPAN>\n" );
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