document.write( "Question 913146: A local specialty coffee shop wants to obtain 30 pounds of a mixture of coffee beans costing $4.40 per pound. They have a mixture costing $4.25 per pound and a mixture costing $4.50 per pound. How much of each should be used? (Use system of linear equations to solve the problem) \n" ); document.write( "
Algebra.Com's Answer #554336 by mananth(16946)\"\" \"About 
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Coffee
\n" ); document.write( " price ---------------- quantity
\n" ); document.write( "Mixture type I 4.25 ---------------- x pounds
\n" ); document.write( "Mixture Type II 4.50 ------ 30 - x pounds
\n" ); document.write( "Mixture 4.40 ---------------- 30
\n" ); document.write( "Total 30 pounds
\n" ); document.write( "4.25 x + 4.5 ( 30 - x ) = 132
\n" ); document.write( "4.25 x + 135 - 4.5 x = 132
\n" ); document.write( "4.25 x - 4.5 x = 132 - 135
\n" ); document.write( "-0.25 x = -3
\n" ); document.write( "/ -0.25
\n" ); document.write( " x = 12 pounds $4.25 Mixture type I
\n" ); document.write( " 18 pounds $4.50 Mixture Type II
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\n" ); document.write( "m.ananth@hotmail.ca
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