document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=207370>Question 207370</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0130954020/algebrahomeworkh>precalculus</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> how many ounces of pure water should be added to 20 ounces of 40% solution of muriatic acid to obtain a 30% solution of muriatic acid? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #156793 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=156793\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  how many ounces of pure water should be added to 20 ounces of 40% solution of muriatic acid to obtain a 30% solution of muriatic acid?<BR>\n" );
document.write( "--------------<BR>\n" );
document.write( "The acid is 40% of 20 ounces = 8 ounces.<BR>\n" );
document.write( "0.4*20 = 8<BR>\n" );
document.write( "----------<BR>\n" );
document.write( "That same 8 ounces is to be 30%.  The water will be the other 70%.<BR>\n" );
document.write( "8/30 = x/100<BR>\n" );
document.write( "30x = 800<BR>\n" );
document.write( "x = 80/3, the total amount of the solution.<BR>\n" );
document.write( "We started with 20, so 80/3 - 20 = 20/3<BR>\n" );
document.write( "20/3 ounces of water is added. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );