document.write( "Question 460782: A coffee merchant combines coffee costing $4.50 per pound with coffee costing $3.50 per pound. How many pounds of each should be used to make 40 lb of a blend costing $3.80 per pound?
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Algebra.Com's Answer #316064 by jorel1380(3719)\"\" \"About 
You can put this solution on YOUR website!
40x3.80=152
\n" ); document.write( "m+n=40
\n" ); document.write( "4.50m+3.50n=152
\n" ); document.write( "3.50m+3.50n=140
\n" ); document.write( "m=12
\n" ); document.write( "n=28
\n" ); document.write( "You need 12 lbs of $4.50 coffee and 28 lbs. of $3.50 coffee for your mixture..
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