document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=286053>Question 286053</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me with my homework problem.  I'm not getting the right answer.  Thank you!\r<BR>\n" );
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document.write( "A chemist has 10cm3 of a 20% solution how many cubic centimeters of water should she add to produce a 5% salt solution. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #207444 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=207444\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let x=amount of water needed<BR>\n" );
document.write( "Now we know that the amount of pure salt in the 20% solution(0.20*10) plus the amount of pure salt in the water that was added(0) has to equal the amount of pure salt in the final mixture(0.05(10+x)), so our equation to solve is:\r<BR>\n" );
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document.write( "0.20*10=0.05(10+x)  get rid of parens and simplify<BR>\n" );
document.write( "2=0.5+0.05x  subtract 0.5 from each side<BR>\n" );
document.write( "2-0.5=0.5-0.5+0.05x<BR>\n" );
document.write( "0.05x=1.5   divide each side by 0.05<BR>\n" );
document.write( "x=30 cm^3--------------amount of water needed\r<BR>\n" );
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document.write( "CK<BR>\n" );
document.write( "0.20*10=0.05*40<BR>\n" );
document.write( "2=2\r<BR>\n" );
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document.write( "Hope this helps---ptaylor </SPAN>\n" );
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