document.write( "Question 545938: 5. A merchant has coffee worth $40 a pound that she wishes to mix with 60 pounds of coffee worth $90 a pound to get a mixture that can be sold for $70 a pound. How many pounds of the $40 coffee should be used?\r
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Algebra.Com's Answer #355797 by Edwin McCravy(20056) $\"\"$ $\"About$

You can put this solution on YOUR website!
A merchant has coffee worth $40 a pound that she wishes to mix with 60 pounds of coffee worth $90 a pound to get a mixture that can be sold for $70 a pound. How many pounds of the $40 coffee should be used?\r
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document.write( "Let x = the number of pounds of cheaper coffee.\r\n" );
document.write( "Since the merchant is mixing this with more expensive coffee, then\r\n" );
document.write( "x + 60 = the number of pounds of medium priced mixed coffee.\r\n" );
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document.write( "The equation is gotten from this\r\n" );
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document.write( " +  =  \r\n" );
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document.write( "(x)($40)  + (60)($90)   = (x + 60)($70) or \r\n" );
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document.write( "             40x + 5400 = 70(x + 60)\r\n" );
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document.write( "Solve that equation and get x = 40\r\n" );
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document.write( "Answer: 40 pounds of $40 coffee.\r\n" );
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document.write( "Edwin

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