document.write( "Question 161488: Soybean meal is 14% protein, cornmeal is 7% protein. How many pounds of each should be mixed together in order to get 280 lb mixture that is 12% protein? \n" ); document.write( "
Algebra.Com's Answer #118950 by nerdybill(7384)![]() ![]() You can put this solution on YOUR website! Let x = amount of soybean meal \n" ); document.write( "then because there is a total of 280 lbs: \n" ); document.write( "280-x = amount of cornmeal \n" ); document.write( ". \n" ); document.write( ".14x + .07(280 - x) = .12(280) \n" ); document.write( ".14x + 19.6 - .07x = 33.6 \n" ); document.write( "19.6 + .07x = 33.6 \n" ); document.write( ".07x = 14 \n" ); document.write( "x = 200 lbs (soybean meal) \n" ); document.write( ". \n" ); document.write( "cornmeal: \n" ); document.write( "280-x = 280-200 = 80 lbs (cornmeal) \n" ); document.write( " |