document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=213395>Question 213395</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/9780321356895/algebrahomeworkh></A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> how many gallons of a 5% acid solution must be mixed with 5 gallons of a 10% solution to obtain  a 7% solution ? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #161194 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=161194\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">     how many gallons of a 5% acid solution must be mixed with 5 gallons of a 10% solution to obtain a 7% solution ?<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Let x = gallons of 5% acid solution added<BR>\n" );
document.write( "then<BR>\n" );
document.write( ".05x + .10(5) = .07(x+5)<BR>\n" );
document.write( ".05x + .5 = .07x+.35<BR>\n" );
document.write( ".5 = .02x+.35<BR>\n" );
document.write( ".15 = .02x<BR>\n" );
document.write( ".15/.02 = x<BR>\n" );
document.write( "7.5 gallons = x<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );