document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=819340>Question 819340</A>: <I><SPAN STYLE=\"word-break: break-all;\"> ......................................................................<BR>\n" );
document.write( "A man has 10 gallons of a 50% sulphuric acid mixture, and 20 gallons of a 20% solution, and 5 gallons of a 10% solution. He wants to use up all the 10% solution and make 15 gallons of 30% solution. How much of each solution should he use? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #493035 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=493035\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A man has 10 gallons of a 50% sulphuric acid mixture, and 20 gallons of a 20% solution, and 5 gallons of a 10% solution. He wants to use up all the 10% solution and make 15 gallons of 30% solution. How much of each solution should he use?<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "acid + acid + acid = acid<BR>\n" );
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document.write( "0.10*5 + 0.50*x + 0.20(10-x) = 0.30*15<BR>\n" );
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document.write( "Multiply thru by 100 to get:<BR>\n" );
document.write( "10*5 + 50x + 20*10-20x = 30*15<BR>\n" );
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document.write( "50 + 30x + 200 = 450<BR>\n" );
document.write( "30x = 200<BR>\n" );
document.write( "x = 20/3 = 6 2/3 gallons (amt. of 50% solution needed)<BR>\n" );
document.write( "10-x = 3 1/3 gallons (amt. of 20% solution needed)<BR>\n" );
document.write( "==============<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "============== </SPAN>\n" );
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