document.write( "Question 911160: how many pounds of coffee worth 10$ a pound should be added to 20 pounds of coffee worth 4$ a pound to get a mixture worth 5$ a pound \n" ); document.write( "
Algebra.Com's Answer #552870 by ewatrrr(24785)\"\" \"About 
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x how many pounds of coffee worth 10$ a pound that should be added
\n" ); document.write( "10x + 4(20lb) = 5(20lb + x)
\n" ); document.write( " x = (20lb)/5 = 4lb, pounds of coffee worth 10$ a pound that should be added
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