document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=544137>Question 544137</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me help my kiddo.  These word problems confuse me.  Thanks!\r<BR>\n" );
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document.write( "To make a mixture that is 25%  betadine, how many gallons of 100% pure betadine need to be mixed with 10 gallons of 15% betadine solution? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #355035 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=355035\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> To make a mixture that is 25% betadine, how many gallons of 100% pure betadine need to be mixed with 10 gallons of 15% betadine solution?<BR>\n" );
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document.write( "let x = amt 100% stuff required to accomplish this<BR>\n" );
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document.write( "A typical mixture equation, use the decimal equiv of percent<BR>\n" );
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document.write( "1.00x + .15(10) = .25(x+10)<BR>\n" );
document.write( "1x + 1.5 = .25x + 2.5<BR>\n" );
document.write( "1x - .25x = 2.5 - 1.5<BR>\n" );
document.write( ".75x = 1<BR>\n" );
document.write( "x = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F.75 ALIGN=MIDDLE  ALT=\"1%2F.75\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "x = 1<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F3 ALIGN=MIDDLE  ALT=\"1%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" > gal of 100% stuff required<BR>\n" );
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document.write( "Check our solution in the original mixture equation<BR>\n" );
document.write( "1.333 + 1.5 = .25(1.333+10)<BR>\n" );
document.write( "1.8333 = .25(11.333)<BR>\n" );
document.write( "1.8333 = 1.833, equality reigns, so it checks out </SPAN>\n" );
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