document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=201972>Question 201972</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Example 4: Mixing Cleaning Solutions.<BR>\n" );
document.write( "King’s Service Station uses two kinds of cleaning solution containing acid and water. “Attack” is 2% acid and “Blast” is 6% acid. They want to mix the two to get 60 qt of a solution that is 5% acid. How many quarts of each should they use?\r<BR>\n" );
document.write( "\n" );
document.write( "Thank you!!! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #152218 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=152218\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let x=amount of 2% acid needed<BR>\n" );
document.write( "Then 60-x=amount of 6% acid needed<BR>\n" );
document.write( "Now we know that the total amount of pure acid before the mixture ((0.02x+0.06(60-x))has to equal the total amount of pure acid after the mixture (0.05*60).  So our equation to solve is:\r<BR>\n" );
document.write( "\n" );
document.write( "0.02x+0.06(60-x)=0.05*60  simplify<BR>\n" );
document.write( "0.02x+3.6-0.06x=3 subtract 3.6 from each side<BR>\n" );
document.write( "-0.04x=-0.6 divide each side by -0.04<BR>\n" );
document.write( "x=15 qts--------------------amt of 2% acid needed<BR>\n" );
document.write( "60-x=60-15=45 qts--------------amt of 6% acid needed<BR>\n" );
document.write( "CK<BR>\n" );
document.write( "0.02*15+0.06*45=0.05*60<BR>\n" );
document.write( "0.3+2.7=3<BR>\n" );
document.write( "3=3\r<BR>\n" );
document.write( "\n" );
document.write( "Hope this helps----ptaylor </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );