document.write( "Question 211425: A pharmacist needs 60 oz of a 30% acid solution. He had available A which is 20% acid and B which is 50% acid. How many oz of each should be mixed to get the desired amount? \n" ); document.write( "
Algebra.Com's Answer #159791 by Alan3354(69443)\"\" \"About 
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A pharmacist needs 60 oz of a 30% acid solution. He had available A which is 20% acid and B which is 50% acid. How many oz of each should be mixed to get the desired amount?
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\n" ); document.write( "A + B = 60 (total of 60 oz)
\n" ); document.write( "0.2A + 0.5B = 0.3*60 (total of acid in solutions)
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\n" ); document.write( "B = 60-A
\n" ); document.write( "2A + 5B = 180
\n" ); document.write( "2A + 5(60-A) = 180
\n" ); document.write( "2A + 300 - 5A = 180
\n" ); document.write( "-3A = -120
\n" ); document.write( "A = 40 oz
\n" ); document.write( "B = 20 oz
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