document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=519297>Question 519297</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A scientist has two solutions, which she has labeled Solution A and Solution B. Each contains salt. She knows that Solution A is 40% salt and Solution B is 90% salt. She wants to obtain 140 ounces of a mixture that is 80% salt. How many ounces of each solution should she use? <BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #345508 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=345508\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Solution A<BR>\n" );
document.write( "Amount = x ounces<BR>\n" );
document.write( "Concentration = 40% = 0.4<BR>\n" );
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document.write( "Solution B<BR>\n" );
document.write( "Amount = 140-x ounces<BR>\n" );
document.write( "Concentration = 90% = 0.9<BR>\n" );
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document.write( "Final Solution<BR>\n" );
document.write( "Amount = 140 ounces<BR>\n" );
document.write( "Concentration = 80% = 0.8\r<BR>\n" );
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document.write( "Amount A * Concentration A + Amount B * Concentration B = Final Amount * Final Concentration<BR>\n" );
document.write( "0.4*x+0.9(140-x)=140*0.8<BR>\n" );
document.write( "0.4x+126-0.9x=112<BR>\n" );
document.write( "0.4x-0.9x=112-126<BR>\n" );
document.write( "-0.5x=14<BR>\n" );
document.write( "-0.5x/-0.5=14/-0.5<BR>\n" );
document.write( "x=28<BR>\n" );
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document.write( "Solution A<BR>\n" );
document.write( "Amount = x = 28 ounces<BR>\n" );
document.write( "Concentration = 40% = 0.4<BR>\n" );
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document.write( "Solution B<BR>\n" );
document.write( "Amount = 140-x = 140-28 = 112 ounces<BR>\n" );
document.write( "Concentration = 90% = 0.9\r<BR>\n" );
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document.write( "She should use Solution A 28 ounces and Solution B 112 ounces to obtain a mixture of 140 ounces with 80% Salt.<BR>\n" );
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