document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=511304>Question 511304</A>: <I><SPAN STYLE=\"word-break: break-all;\"> how many milliliters of water must be added to 250 ml of 25% salt solution to reduce its concentration to 10% </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #342110 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=342110\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> how many milliliters of water must be added to 250 ml of 25% salt solution to reduce its concentration to 10%<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "water + water = water<BR>\n" );
document.write( "x + 0.75*250 = 0.90(x+250)<BR>\n" );
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document.write( "Multiply thru by 100 to get:<BR>\n" );
document.write( "100x + 75*250 = 90x + 90*250<BR>\n" );
document.write( "10x = 15*250<BR>\n" );
document.write( "x = 375 ml (amt. of pure water needed)<BR>\n" );
document.write( "====================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "==================== </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );