document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1022953>Question 1022953</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How much 30% acid solution should be be added to 10% acid solution to make 100mL of a 12% acid solution?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #638523 by </B><A HREF=/tutors/aboutme.mpl?userid=addingup><B>addingup(3677)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=addingup><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=addingup><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=638523\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The total is 100ml. <BR>\n" );
document.write( "Let's call the amount at 0.30 x. How much of the solution can be at 0.10? Well, 100-x, since the total is 100.<BR>\n" );
document.write( "0.30x+0.10(100-x) = 0.12(100)<BR>\n" );
document.write( "0.30x+10-0.10x = 12<BR>\n" );
document.write( "0.20x = 2<BR>\n" );
document.write( "x = 10ml of the 30% solution. And:<BR>\n" );
document.write( "100-10 = 90ml of the 10% solution<BR>\n" );
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document.write( "common sense quick check:<BR>\n" );
document.write( "We want 12% and we have 30% and 10%. Is 12 closer to 30 or closer to 10? It's closer to 10, so it makes sense that the amount at 10% will be greater. </SPAN>\n" );
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