document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=553664>Question 553664</A>: <I><SPAN STYLE=\"word-break: break-all;\"> peter decides to mix grades of gasoline in his truck. he puts in 12 gallons of regular and 7 gallons of premium for a total cost of $48.21. If premium gas cost .21 cents more per gallon, what was the price of each grade of gasoline? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #360980 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=360980\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> regular-------------------- 12 -------------x <BR>\n" );
document.write( "premium----------------------7-----------------------(x+0.21)\r<BR>\n" );
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document.write( "12*x+7(x+0.21)= 48.21\r<BR>\n" );
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document.write( "12x+7x+1.47=48.21\r<BR>\n" );
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document.write( "19x=48.21-1.47\r<BR>\n" );
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document.write( "19x=46.74<BR>\n" );
document.write( "x= 46.74/19\r<BR>\n" );
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document.write( "regular $2.46<BR>\n" );
document.write( "Premium $2.67 ( add 0.21 to regular price) </SPAN>\n" );
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