document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1168722>Question 1168722</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I multiplied one whole number by 18. I multiplied a second whole number by 21. I then added the two products . Of the following , which could have been the resulting sum ? .Thanks for any help <BR>\n" );
document.write( "Options are —-<BR>\n" );
document.write( "A.  1996<BR>\n" );
document.write( "B 1997<BR>\n" );
document.write( "C 1998<BR>\n" );
document.write( "D. 1999 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #793341 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52835)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ikleyn><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=ikleyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=793341\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .\r<BR>\n" );
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document.write( "We start with numbers &nbsp;x &nbsp;and &nbsp;y.\r<BR>\n" );
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document.write( "The resulting number is  &nbsp;&nbsp;18x + 21y = 3*(6x+7y).\r<BR>\n" );
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document.write( "The resulting number is a multiple of &nbsp;3.\r<BR>\n" );
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document.write( "Of the four given optional numbers, only &nbsp;1998 &nbsp;is a multiple of &nbsp;3.\r<BR>\n" );
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document.write( "Other three optional numbers are not multiples of &nbsp;3.\r<BR>\n" );
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document.write( "So, &nbsp;the only answer is option &nbsp;(C) &nbsp;with the number of &nbsp;1998.\r<BR>\n" );
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document.write( "    The rule of divisibility by 3 is THIS:\r\n" );
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document.write( "        |    a number is divisible by 3 if and only if   |\r\n" );
document.write( "        |    the sum of its digits is divisible by 3.    |\r\n" );
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document.write( "    For the number 1998 the sum of its digits is  1+9+9+8 = 27.\r\n" );
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document.write( "    This sum is divisible by 3 - - - so the number 1998 is divisible by 3,\r\n" );
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document.write( "         while the other three numbers ARE NOT divisible by 3.\r\n" );
document.write( "</PRE>\r<BR>\n" );
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document.write( "-----------\r<BR>\n" );
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document.write( "I answered your question in full, &nbsp;giving a full explanation.\r<BR>\n" );
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document.write( "On the divisibility rules, &nbsp;see the lessons\r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;- <A  rel=nofollow HREF=http://www.algebra.com/algebra/homework/divisibility/lessons/Divisibility-by-2-rule.lesson>Divisibility by 2 rule</A>  \r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;- <A  rel=nofollow HREF=http://www.algebra.com/algebra/homework/divisibility/lessons/Divisibility-by-3-rule.lesson>Divisibility by 3 rule</A>  \r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;- <A  rel=nofollow HREF=http://www.algebra.com/algebra/homework/divisibility/lessons/Divisibility-by-4-rule.lesson>Divisibility by 4 rule</A>  \r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;- <A  rel=nofollow HREF=http://www.algebra.com/algebra/homework/divisibility/lessons/Divisibility-by-5-rule.lesson>Divisibility by 5 rule</A>  \r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;- <A  rel=nofollow HREF=http://www.algebra.com/algebra/homework/divisibility/lessons/Divisibility-by-6-rule.lesson>Divisibility by 6 rule</A>  \r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;- <A  rel=nofollow HREF=http://www.algebra.com/algebra/homework/divisibility/lessons/Divisibility-by-9-rule.lesson>Divisibility by 9 rule</A>  \r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;- <A  rel=nofollow HREF=http://www.algebra.com/algebra/homework/divisibility/lessons/Divisibility-by-10-rule.lesson>Divisibility by 10 rule</A>  \r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;- <A  rel=nofollow HREF=http://www.algebra.com/algebra/homework/divisibility/lessons/Divisibility-by-11-rule.lesson>Divisibility by 11 rule</A>  \r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;- <A  rel=nofollow HREF=http://www.algebra.com/algebra/homework/divisibility/lessons/Restore-the-omitted-digit-in-a-number-in-a-way-the-number-is-divisible-by-9.lesson>Restore the omitted digit in a number in a way that the number is divisible by 9</A>\r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;- <A  rel=nofollow HREF=http://www.algebra.com/algebra/homework/divisibility/lessons/Restore-the-omitted-digit-in-a-number-in-a-way-the-number-is-divisible-by-11.lesson>Restore the omitted digit in a number in a way that the number is divisible by 11</A> \r<BR>\n" );
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document.write( "in this site.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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