document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=239176>Question 239176</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I have asked my teacher for help, but she says according to the school rules she cannot help me. She cannot even offer an example problem to give me the concepts needed to figure out this equation. \r<BR>\n" );
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document.write( "Selena left an 18% tip for a meal.  The total cost of the meal, including the tip, was $40.71.  What was the cost of the meal before the tip was added?\r<BR>\n" );
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document.write( "I came up with this formula\r<BR>\n" );
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document.write( "(x)(18%)=40.71<BR>\n" );
document.write( "(x)(18%)/18%=40.71/18%<BR>\n" );
document.write( "x=226.17<BR>\n" );
document.write( "Which according to division rules, I am to move the decimal over....22.62 (rounding to the nearest tenth)\r<BR>\n" );
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document.write( "therefore 22.62 times 18% is 4.071, moving the decimal that would be correct. \r<BR>\n" );
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document.write( "Is there a rule for moving the decimal in these algebraic equations? \r<BR>\n" );
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document.write( "Thank you very much!   </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #175674 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley77><B>checkley77(12844)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley77><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=175674\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 18%=.18 in decimal.<BR>\n" );
document.write( "Let x be the cost of the meal & .18x be the amount of the tip. <BR>\n" );
document.write( "total cost=meal+tip <BR>\n" );
document.write( "40.71=x+.18x [1x+.18x=1.18x]<BR>\n" );
document.write( "1.18x=40.71<BR>\n" );
document.write( "x=40.71/1.18<BR>\n" );
document.write( "x=$34.50 was the price of the meal before the tip.<BR>\n" );
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document.write( "IF YOUR COMMENTS ARE VALID THEN I MUST OFFER A OPINION:<BR>\n" );
document.write( "Either the school rules are ridiculous.<BR>\n" );
document.write( "Your teacher doesn't know how to solve these problems.<BR>\n" );
document.write( "Or you have no taxt books with proper examples.<BR>\n" );
document.write( "WHATEVER THE CASE, THE SCHOOL SYSTEM IS AT FAULT FOR NOT TEACHING, WHICH IS WHAT I ASSUME THEY ARE BEING PAID TO DO. <BR>\n" );
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