document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=772799>Question 772799</A>: <I><SPAN STYLE=\"word-break: break-all;\"> can someone help me please with this problem \r<BR>\n" );
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document.write( " To set up a chemistry lab experiment, you need to make 400 mL of 15% nitric acid solution. You have 20% and 5% nitric acid solutions available. How much of each will you use to make up the required solution?<BR>\n" );
document.write( "a) mL of 20% solution (nearest integer): 		<BR>\n" );
document.write( "b) mL of 5% solution (nearest integer): 		 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #471116 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=471116\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> To set up a chemistry lab experiment, you need to make 400 mL of 15% nitric acid solution. You have 20% and 5% nitric acid solutions available. How much of each will you use to make up the required solution?<BR>\n" );
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document.write( "let x=amount of 5% solution to use<BR>\n" );
document.write( "400-x=amount of 20% solution to use<BR>\n" );
document.write( "..<BR>\n" );
document.write( "5%x+20%(400-x)=15%*400<BR>\n" );
document.write( ".05x+80-.20x=60<BR>\n" );
document.write( ".15x=20<BR>\n" );
document.write( "x=400/3<BR>\n" );
document.write( "400-x=800/3<BR>\n" );
document.write( "amount of 5% solution to use=400/3 ml<BR>\n" );
document.write( "amount of 20% solution to use=800/3 ml </SPAN>\n" );
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