document.write( "Question 201433: A coffee merchant combines coffee costing $5.50 per pound with coffee costing $3.00 per pound. How many pounds of each should be used to make 40 lb of a blend costing $4 per pound? \n" ); document.write( "
Algebra.Com's Answer #151653 by rfer(16322)\"\" \"About 
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5.5x+3(40-x)=4(40)
\n" ); document.write( "5.5x+120-3x=160
\n" ); document.write( "2.5x=40
\n" ); document.write( "x=16
\n" ); document.write( "$5.50 per pound *16=$88.00
\n" ); document.write( "$3.00 per pound *40-16=$72.00
\n" ); document.write( "Total = $160 which is = to $4.00*40 pounds
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