document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=56991>Question 56991</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/003052217X/algebrahomeworkh></A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> 18 is 20% of what number?\r<BR>\n" );
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document.write( "I don't understand this way of finding \"x\". This chapter has an example of\r<BR>\n" );
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document.write( "25/100 = x/40 ------->100x = 1000x-------> x = 10\r<BR>\n" );
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document.write( "Help!! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #38767 by </B><A HREF=/tutors/aboutme.mpl?userid=Scriptor><B>Scriptor(36)</B></A><img src=\"/images/stars/stars-07.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Scriptor><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=38767\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Hello,\r<BR>\n" );
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document.write( "If 18 is 20% of a certain x, then that means that: 20*x /100 = 18\r<BR>\n" );
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document.write( "You only take 20% of x, that's why you multiply x by 20/100 (it makes x smaller)\r<BR>\n" );
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document.write( "So: 20*x/100 = 18\r<BR>\n" );
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document.write( "Multiply both sides by 100 to obtain:  20*x = 1800\r<BR>\n" );
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document.write( "Divide by 20 at both sides:\r<BR>\n" );
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document.write( "x = 1800/20 = 90\r<BR>\n" );
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document.write( "This means that 20 % of 90  = 18<BR>\n" );
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