document.write( "Question 316622: A coffee merchant has two types of coffee beans, one selling for $3 per pound and the other selling for $5 per pound. The beans are to be mixed to provide 100 lb of a mixture selling for $4.18 per pound. How much of each type of coffee bean should be used to form 100 lb of the mixture? \n" ); document.write( "
Algebra.Com's Answer #226592 by checkley77(12844)\"\" \"About 
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5x+3(100-x)=4.18*100
\n" ); document.write( "5x+300-3x=418
\n" ); document.write( "5x-3x=418-300
\n" ); document.write( "2x=118
\n" ); document.write( "x=118/2
\n" ); document.write( "x=59 pounds of $5 coffee.
\n" ); document.write( "100-59=41 pounds of $3 coffee.
\n" ); document.write( "Proof:
\n" ); document.write( "5*59+3*41=4.18*100
\n" ); document.write( "295+123=418
\n" ); document.write( "418=418
\n" ); document.write( "
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