document.write( "Question 1198048: One 1700-pound load of feed mixture contains 25% corn, 40% bran, and roughage. How many pounds of corn should be added to a load of feed mixture to make the feed 40% corn? \n" ); document.write( "

Algebra.Com's Answer #831556 by ikleyn(52788) $\"\"$ $\"About$

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\n" ); document.write( "One 1700-pound load of feed mixture contains 25% corn, 40% bran, and roughage.
\n" ); document.write( "How many pounds of corn should be added to a load of feed mixture to make the feed 40% corn?
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document.write( "Let x be the mass of the corn to add, in pounds.\r\n" );
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document.write( "Then you have this equation\r\n" );
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document.write( "    0.25*1700 + x = 0.4*(1700+x)\r\n" );
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document.write( "saying that the final mixture is 40% of corn.\r\n" );
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document.write( "From the equation\r\n" );
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document.write( "    0.25*1700 + x = 0.4*1700 + 0.4x\r\n" );
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document.write( "      x - 0.4x    = 0.4*1700 - 0.25*1700\r\n" );
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document.write( "        0.6x      =     255\r\n" );
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document.write( "           x      =     255/0.6 = 425.\r\n" );
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document.write( "ANSWER.  425 pounds of the corn should be added.\r\n" );
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