document.write( "Question 716140: I need help solving this problem. The problem I am trying to solve is supposed to generate two formulas that I will solve with multiplication and addition/subtraction. However, I can't seem to understand this problem. It reads:\r
\n" ); document.write( "\n" ); document.write( "A grocer mixes coffee that sells for $6.40 a pound with coffee that sells for $10.40 a pound. If she wants to have 30 pounds of coffee to sell at $9.04 a pound, how many pounds of each will she have to use? \n" ); document.write( "

Algebra.Com's Answer #439755 by solver91311(24713) $\"\"$ $\"About$

You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "Let

represent the number of pounds of less expensive coffee. Let

represent the number of pounds of more expensive coffee.\r
\n" ); document.write( "\n" ); document.write( "The total number of pounds of the mixture is 30 lbs, so:\r
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\n" ); document.write( "\n" ); document.write( "

\r
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\n" ); document.write( "\n" ); document.write( "The cost of

pounds of $6.40 per pound coffee must be

and the cost of

pounds of $10.40 per pound coffee must be

. The cost of 30 pounds of $9.04 per pound coffee is

, so:\r
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\n" ); document.write( "\n" ); document.write( "

\r
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\n" ); document.write( "\n" ); document.write( "Solve the 2X2 system for

and

. Personnally, I would use the substitution method, but then again all roads lead to Rome.\r
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\n" ); document.write( "\n" ); document.write( "John
\n" ); document.write( "

\n" ); document.write( "Egw to Beta kai to Sigma
\n" ); document.write( "My calculator said it, I believe it, that settles it
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$\"The$

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