document.write( "Question 1103835: Two factory plants are making TV panels. Yesterday, Plant A produced 3000 fewer panels than Plant B did. \r
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Algebra.Com's Answer #718536 by ikleyn(52909)\"\" \"About 
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\n" ); document.write( "Two factory plants are making TV panels.
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document.write( "    A = B - 3000           (1)     (\"Plant A produced 3000 fewer panels than Plant B did\")\r\n" );
document.write( "0.05A + 0.04*B = 1380.     (2)     (counting defective panels)\r\n" );
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document.write( "Substitute expression (1) into eq(2). You will get\r\n" );
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document.write( "0.05*(B-3000) + 0.04*B = 1380,\r\n" );
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document.write( "0.05*B - 150 + 0.04*B = 1380,\r\n" );
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document.write( "0.09*B = 1380 + 150 = 1530  ====>  B = \"1530%2F0.09\" = 17000.\r\n" );
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document.write( "Answer.  Plant B produced  17000 panels.\r\n" );
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