document.write( "Question 1177936: Combined, there are 188 ​Asians, Africans,​ Europeans, and Americans in a village. The number of Asians exceeds the number of Africans and Europeans by 72. The difference between the number of Europeans and Americans is 13. If the number of Africans is​ doubled, their population exceeds the number of Europeans and Americans by 27. Determine the number of​ Asians, Africans,​ Europeans, and Americans in this village. \n" ); document.write( "
Algebra.Com's Answer #807105 by ikleyn(52787)\"\" \"About 
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\n" ); document.write( "Combined, there are 188 ​Asians, Africans,​ Europeans, and Americans in a village.
\n" ); document.write( "The number of Asians exceeds the number of Africans and Europeans by 72.
\n" ); document.write( "The difference between the number of Europeans and Americans is 13.
\n" ); document.write( "If the number of Africans is​ doubled, their population exceeds the number of Europeans and Americans by 27.
\n" ); document.write( "Determine the number of​ Asians, Africans,​ Europeans, and Americans in this village.
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document.write( "x = As\r\n" );
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document.write( "y = Af\r\n" );
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document.write( "z = Eu\r\n" );
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document.write( "t = Am\r\n" );
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document.write( "The system of equation\r\n" );
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document.write( "    x + y + z + t = 188\r\n" );
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document.write( "    x - y - z     =  72\r\n" );
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document.write( "            z - t =  13\r\n" );
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document.write( "       2y - z - t =  27\r\n" );
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document.write( "Next, I use the free of charge online solver  www.reshish.com\r\n" );
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document.write( "to get the solution to this system.\r\n" );
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document.write( "ANSWER.  x= 125 (Asians);  y= 30 (Africans);  z= 23 (Europeans);  t= 10 (Americans).\r\n" );
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