document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=247211>Question 247211</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In a family there are two cars. The sum of the average miles per gallon obtained by the two cars in a particular week is 50  . The first car has consumed 25 gallons during that week, and the second has consumed 30  gallons, for a total of 1400 miles driven by the two cars combined. What was the average gas mileage obtained by each of the two cars in 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 #180389 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=180389\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let a =mpg one car and b= mpg the other <BR>\n" );
document.write( "(a+b)=50<BR>\n" );
document.write( "b=50-a<BR>\n" );
document.write( "25a+30(50-a)=1400\r<BR>\n" );
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