document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=159215>Question 159215</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A restaurant has some pancake batter that is too thin.  It weighs 12 kilograms and contains 85% flour.  How many kilograms of flour should be added so that the final mixture is 90% flour? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #117353 by </B><A HREF=/tutors/aboutme.mpl?userid=gonzo><B>gonzo(654)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=gonzo><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=117353\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> there are at least a couple of ways of looking at it.<BR>\n" );
document.write( "here's one.<BR>\n" );
document.write( "-----------------------------------<BR>\n" );
document.write( "F = .85M (F = flour)<BR>\n" );
document.write( "W = .15M (W = water)<BR>\n" );
document.write( "M = 12 (M = mixture)<BR>\n" );
document.write( "F = 10.2 kg<BR>\n" );
document.write( "W = 1.8 kg<BR>\n" );
document.write( "since the amount of flour needs to be raised, we can keep the amount of water constant at 1.8 kg.<BR>\n" );
document.write( "1.8 kg of water in the new mixture represents 10% of the mixture (90% flour).<BR>\n" );
document.write( "1.8 kg of water / .10 = 18 kg of mixture<BR>\n" );
document.write( "new mixture must be 18 kg if 1.8 kg of water is 10% of it.<BR>\n" );
document.write( "amount of flour in the new mixture becomes 18 - 1.8 = 16.2 kg<BR>\n" );
document.write( "16.2 - 10.2 kg of flour needs to be added to the mixture = 6 kg of flour.<BR>\n" );
document.write( "answer is 6 kg of flour needs to be added<BR>\n" );
document.write( "-------------------------------------<BR>\n" );
document.write( "here's the other.<BR>\n" );
document.write( "-------------------------------------<BR>\n" );
document.write( "if .85 of the mixture is flour and .15 of the mixture is water, then the ratio of flour to water is represented by (85/15)<BR>\n" );
document.write( "to test you take 85/15 * 1.8 kg water = 10.2 kg of flour - checks out ok.<BR>\n" );
document.write( "since the new mixture must be 90% flour and 10% water, the ratio of flour to water in the new mixture must be (9/1).<BR>\n" );
document.write( "since the amount of water will remain the same, (9/1)*1.8 = 16.2 kg of flour required in the new mixture.<BR>\n" );
document.write( "16.2 - 10.2 = 6 kg.<BR>\n" );
document.write( "--------------------------------------\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );