document.write( "Question 268920: soybean meal is 16% protein: conrmeal is 8% protein. How many pounds of each should be mixed together in order to get 320-lb mixture that is 15% protein\r
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soybean meal is 16% protein: conrmeal is 8% protein. How many pounds of each should be mixed together in order to get 320-lb mixture that is 15% protein
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\n" ); document.write( "\n" ); document.write( "since 16% is closer to 15% we know we will need more of the soybean meal
\n" ); document.write( "call soybean mixture x, and cornmeal mixture 320-x
\n" ); document.write( "% * lbs mixture A + % * lbs mixture B = % * lbs mixture C
\n" ); document.write( "16% * x + 8% * (320-x) = 15% * 320
\n" ); document.write( "0.16x + 0.08*320 - 0.08x = 0.15*320
\n" ); document.write( "0.08x + 25.6 = 48
\n" ); document.write( "0.08x = 22.4
\n" ); document.write( "x = 280 lbs of soybean meal
\n" ); document.write( "320-x = 40 lbs of cornmeal\r
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