document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=565209>Question 565209</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How many centiliters of a 25% acid solution must be added to 200 centiliters of a 4% acid solution to make a 10% 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 #365715 by </B><A HREF=/tutors/aboutme.mpl?userid=Maths68><B>Maths68(1474)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Maths68><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=Maths68><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=365715\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Solution A<BR>\n" );
document.write( "Amount = x <BR>\n" );
document.write( "Concentration =25% = 0.25\r<BR>\n" );
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document.write( "Solution B<BR>\n" );
document.write( "Amount = 200 <BR>\n" );
document.write( "Concentration =4% = 0.04\r<BR>\n" );
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document.write( "Resultant Solution<BR>\n" );
document.write( "Amount = 200+x <BR>\n" );
document.write( "Concentration =10% = 0.1\r<BR>\n" );
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document.write( "[Amount Solution A * Concentration A] + [Amount Solution B * Concentration of B]+ [Amount Solution B * Concentration of B] = Amount of Resultant * Concentration of resultant\r<BR>\n" );
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document.write( "(0.25)(x)+(200)(0.04)=(200+x)(0.1)<BR>\n" );
document.write( "0.25x+8=20+0.1x<BR>\n" );
document.write( "0.25x-0.1x=20-8<BR>\n" );
document.write( "0.15x=12<BR>\n" );
document.write( "0.15x/0.15=12/0.15<BR>\n" );
document.write( "x=80\r<BR>\n" );
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document.write( "Solution A<BR>\n" );
document.write( "Amount = x = 80 centiliters<BR>\n" );
document.write( "Concentration =25% = 0.25\r<BR>\n" );
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document.write( "Solution B<BR>\n" );
document.write( "Amount = 200 centiliters<BR>\n" );
document.write( "Concentration =4% = 0.04\r<BR>\n" );
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document.write( "Resultant Solution<BR>\n" );
document.write( "Amount = 200+x = 200+80 = 280 centiliters<BR>\n" );
document.write( "Concentration =10% = 0.1\r<BR>\n" );
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document.write( "80 centiliters of a 25% acid solution must be added to 200 centiliters of a 4% acid solution to make a 10% acid solution.<BR>\n" );
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