document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1156587>Question 1156587</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Doreen Schmidt is a chemist. She needs to prepare 28 ounces of a 10​% hydrochloric acid solution. Find the amount of 14​% solution and the amount of 7​% solution she should mix to get this solution. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #779327 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=779327\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> prepare 28 ounces of a 10​% hydrochloric acid solution.<BR>\n" );
document.write( " Find the amount of 14​% solution and the amount of 7​% solution she should mix to get this solution.<BR>\n" );
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document.write( "let x = amt of 14% solution required<BR>\n" );
document.write( "the total amt should be 28 oz, therefore:<BR>\n" );
document.write( "(28-x) = amt of 7% solution<BR>\n" );
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document.write( "A typical mixture equation<BR>\n" );
document.write( ".14x + .07(28-x) = .10(28)<BR>\n" );
document.write( ".14x + 1.96 - .07x = 2.8<BR>\n" );
document.write( ".14x - .07x = 2.8 - 1.96<BR>\n" );
document.write( ".07x = .84<BR>\n" );
document.write( "x = .84/.07<BR>\n" );
document.write( "x = 12 oz of 14% solution<BR>\n" );
document.write( "then<BR>\n" );
document.write( "28 - 12 = 16 oz of the 7% solution<BR>\n" );
document.write( ":<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Check this<BR>\n" );
document.write( ".14(12) + .07(16) = .10(28)<BR>\n" );
document.write( "1.68 + 1.12 = 2.8<BR>\n" );
document.write( " <BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );