document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=131491>Question 131491</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 66 kilograms of cement is mixed with 22.5 kilograms of water. However, the mixture is supposed to be 40% water in order to dry properly. Find the amount that should be added. \r<BR>\n" );
document.write( "\n" );
document.write( "Please help, thanks! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #95972 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=95972\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 66 kilograms of cement is mixed with 22.5 kilograms of water. However, the mixture is supposed to be 40% water in order to dry properly. Find the amount that should be added. <BR>\n" );
document.write( "----------------<BR>\n" );
document.write( "Start: 22.5/66 = 34% water in the cement before additional water added<BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "Add:  x kg of water<BR>\n" );
document.write( "----------------<BR>\n" );
document.write( "End up with: (x+66) kg of cement containing 40% water.<BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "EQUATION:<BR>\n" );
document.write( "water + water = water<BR>\n" );
document.write( "22.5 + x = 0.40(66+x)<BR>\n" );
document.write( "22.5 + x = 26.4 + 0.4x<BR>\n" );
document.write( "0.6x = 3.9<BR>\n" );
document.write( "x = 6.5 kg of water must be added<BR>\n" );
document.write( "==================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );