document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=507422>Question 507422</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Pure acid is to be added to a 10% acid solution to obtain 54L of a 20% acid solution. What amount of each should be used? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #340661 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=340661\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Pure acid is to be added to a 10% acid solution to obtain 54L of a 20% acid solution.<BR>\n" );
document.write( " What amount of each should be used?<BR>\n" );
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document.write( "Let x = amt of pure acid required<BR>\n" );
document.write( "Since the resulting amt is to be 54L:<BR>\n" );
document.write( "(54-x) = amt of 10% acid required<BR>\n" );
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document.write( "A typical mixture equation<BR>\n" );
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document.write( "x + .10(54-x) = .20(54)<BR>\n" );
document.write( "x + 5.4 - .10x = 10.8<BR>\n" );
document.write( "x - .1x = 10.8 - 5.4<BR>\n" );
document.write( ".9x = 5.4<BR>\n" );
document.write( "x = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5.4%2F.9 ALIGN=MIDDLE  ALT=\"5.4%2F.9\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "x = 6 L of pure acid to be combined with: 54-6 = 48 L of 10% solution </SPAN>\n" );
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