document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=211083>Question 211083</A>: <I><SPAN STYLE=\"word-break: break-all;\"> we wish to obtain a 40% solution of nitric acid by mixing a 20% solution and a 70% solution of the acid. what percentages of the final solution should be taken from the 20% and 70% solutions?\r<BR>\n" );
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document.write( "thanks for the help </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #159607 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=159607\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> we wish to obtain a 40% solution of nitric acid by mixing a 20% solution and a 70% solution of the acid. <BR>\n" );
document.write( "what percentages of the final solution should be taken from the 20% and 70% solutions<BR>\n" );
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document.write( "It does not give the amt of final solution to be made. <BR>\n" );
document.write( "Assume it is 100 units, easy to change amt to per cent.<BR>\n" );
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document.write( "Let x = amt of 70% solution used<BR>\n" );
document.write( "then<BR>\n" );
document.write( "(100-x) = amt of 20% solution<BR>\n" );
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document.write( "A typical mixture equation;<BR>\n" );
document.write( ".7x + .2(100 - x) = .4(100)<BR>\n" );
document.write( ".7x + 20 - .2x = 40<BR>\n" );
document.write( ".7x - .2x = 40 - 20<BR>\n" );
document.write( ".5x = 20<BR>\n" );
document.write( "x = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=20%2F.5 ALIGN=MIDDLE  ALT=\"20%2F.5\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "x = 40 units of 70% solution<BR>\n" );
document.write( "and<BR>\n" );
document.write( "100 - 40 = 60 units of 20% solution<BR>\n" );
document.write( ":<BR>\n" );
document.write( "We can say we will take 40% from the 70% solution<BR>\n" );
document.write( "and take 60% from the 20% solution </SPAN>\n" );
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