document.write( "Question 254782: How much coffee costing 3$ a pound should be mixed with 5 pounds of coffee costing $3.50 to obtain a mixture costing $3.25 a pound? \n" ); document.write( "

Algebra.Com's Answer #187111 by palanisamy(496) $\"\"$ $\"About$

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Let x pounds of coffee costing 3$ a pound should be mixed with 5 pounds of coffee costing $3.50
\n" ); document.write( "The final mixture costs $3.25 a pound
\n" ); document.write( "Therefore we get,
\n" ); document.write( " 3x+5*(3.50) = (x+5)*(3.25)
\n" ); document.write( " 3x+ 17.5 = 3.25x+16.25
\n" ); document.write( " 3x-3.25x = 16.25-17.5
\n" ); document.write( " -.25x = -1.25
\n" ); document.write( "Multiplying by (-10), we get
\n" ); document.write( " 25x = 125
\n" ); document.write( " x = 125/25
\n" ); document.write( " x = 5
\n" ); document.write( "
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