document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=955316>Question 955316</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How many gallons of a 2% acid solution must be mixed with 7 gallons of a 20% solution to obtain a 17% solution? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #583524 by </B><A HREF=/tutors/aboutme.mpl?userid=ptaylor><B>ptaylor(2198)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ptaylor><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=ptaylor><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=583524\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> How many gallons of a 2% acid solution must be mixed with 7 gallons of a 20% solution to obtain a 17% solution?\r<BR>\n" );
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document.write( "Let x=amt of 2% solution needed<BR>\n" );
document.write( "Now we know that the amount of pure acid that exists before the mixture takes place (0.02x+0.20*7) has to equal the amount of pure acid that exists after the mixture takes place(0.17(7+x))<BR>\n" );
document.write( "Sooooo<BR>\n" );
document.write( "0.02x+0.20*7=0.17(7+x)<BR>\n" );
document.write( "0.02x+1.4=1.19+0.17x<BR>\n" );
document.write( "0.17x-0.02x=1.4-1.19<BR>\n" );
document.write( "0.15x=0.21<BR>\n" );
document.write( "x=1.4 gal---amount of 2% solution needed<BR>\n" );
document.write( "CK<BR>\n" );
document.write( "0.02(1.4)+1.4=0.17(8.4)<BR>\n" );
document.write( "0.028+1.4=1.428<BR>\n" );
document.write( "1.428=1.428\r<BR>\n" );
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document.write( "Hope this helps----ptaylor<BR>\n" );
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