document.write( "Question 732137: a store mixes Kentucky bluegrass worth $11 per pound and ryegrass worth $15 per pound. the mixture is to sell for $12 per pound. Find how much of each should be used to make a 540-pound mixture. \n" ); document.write( "
Algebra.Com's Answer #447559 by richwmiller(17219)\"\" \"About 
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b+r=540,
\n" ); document.write( "11b+15r=540*12
\n" ); document.write( "b = 405, r = 135
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