document.write( "Question 121715: Please help me solve this word problem: A pharmacist needs to strengthen a 15% alcohol solution so that it contains 32% alcohol. How much pure alcohol should be added to 100ml of the 15% solution?\r
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Algebra.Com's Answer #89351 by stanbon(75887)\"\" \"About 
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A pharmacist needs to strengthen a 15% alcohol solution so that it contains 32% alcohol. How much pure alcohol should be added to 100ml of the 15% solution?
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\n" ); document.write( "15% solution DATA:
\n" ); document.write( "Amount = x ml ; Amt of active ingredient = 0.15x ml
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\n" ); document.write( "Pure alcohol DATA:
\n" ); document.write( "Amt = 100-x ml : Amt of active is 100-x ml
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\n" ); document.write( "32% solution DATA:
\n" ); document.write( "Amt = 100 ml ; Amt of active is 0.32*100 = 32 ml
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\n" ); document.write( "EQUATION:
\n" ); document.write( "active + active = active
\n" ); document.write( "0.15x + 100-x = 32
\n" ); document.write( "-0.85x = -68
\n" ); document.write( "x = 80 ml
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\n" ); document.write( "Amt of pure alcohol needed for the solution = 100-x = 20 ml
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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