document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=230978>Question 230978</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In the US, the highest incidence of fraternal twins birth occurs among Asian-Americans, then African-Americans, then Caucasians. Of every 14600 births, the total number of fraternal twins births for all three is 701, where there are 176 more for Asian-Americans than African-Americans and 218 more for Asian-Americans than Caucasians. Determine the number for each race.\r<BR>\n" );
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document.write( "Out of every 14600 births, there are _____ sets of Asian-Americans twins, _____ sets of African-American twins, and _____ sets of Caucasian twins. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #171047 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=171047\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> In the US, the highest incidence of fraternal twins birth occurs among Asian-Americans, then African-Americans, then Caucasians. Of every 14600 births, the total number of fraternal twins births for all three is 701, where there are 176 more for Asian-Americans than African-Americans and 218 more for Asian-Americans than Caucasians. Determine the number for each race. <BR>\n" );
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document.write( "As + Af + Ca = 701<BR>\n" );
document.write( "As = Af +176<BR>\n" );
document.write( "As = Ca + 218<BR>\n" );
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document.write( "Substitute for Af and Ca to solve for As<BR>\n" );
document.write( "Af = As-176<BR>\n" );
document.write( "Ca = As-218<BR>\n" );
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document.write( "As + (As-176) + (As-218) = 701<BR>\n" );
document.write( "3As - 394 = 701<BR>\n" );
document.write( "3As = 1095<BR>\n" );
document.write( "As = 365 (# of Asian-American twin births)<BR>\n" );
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document.write( "Since Af = As-176, Af = 365-176 = 189 (# of African-American twin births)<BR>\n" );
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document.write( "Since Ca = As-218, Ca = 365-218 = 147 (# of Caucasian-American twin births)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.\r<BR>\n" );
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