document.write( "Question 725241: Franco Manue runs a grocery store. He wishes to mix 30 pounds of coffee to sell for a total cost of $170. To obtain the mixture, he will mix coffee that sells for $5.20 per pound with coffee that sells for $6.30 per pound. How many pounds of each coffee should he use. \n" ); document.write( "

Algebra.Com's Answer #444041 by josgarithmetic(39617) $\"\"$ $\"About$

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Two equations would be needed. One to account for money and the other to account for mass.\r
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\n" ); document.write( "\n" ); document.write( "x = pounds of $5.20/pound coffee
\n" ); document.write( "y = pounds of $6.30/pound coffee\r
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\n" ); document.write( "\n" ); document.write( " $\"5.20x%2B6.30y=170\"$ . That accounts for the money but uses two variables.\r
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\n" ); document.write( "\n" ); document.write( "The grocer wants a mixture of 30 pounds of coffee, so
\n" ); document.write( " $\"x%2By=30\"$ .\r
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\n" ); document.write( "\n" ); document.write( "Two equations in two unknowns. Solve for x and y. \n" ); document.write( "

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