document.write( "Question 700831: a pharmacist has 100 ounces of a solution that is 3 1/2% iodine and 96 1/2% alcohol. how much alcohol should the pharmacist add to get a 1 1/2% iodine solution? \n" ); document.write( "
Algebra.Com's Answer #432015 by josmiceli(19441)\"\" \"About 
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The key is the amount of iodine does not change,
\n" ); document.write( "only the alcohol.
\n" ); document.write( "\"+.035%2A100+=+3.5+\" ounces of iodine in 3.5% solution
\n" ); document.write( "Let \"+a+\" = ounces of alcohol to be added
\n" ); document.write( "\"+3.5+%2F+%28+100+%2B+a+%29+=+.015+\"
\n" ); document.write( "\"+3.5+=+.015%2A%28+100+%2B+a+%29+\"
\n" ); document.write( "\"+3.5+=+1.5+%2B+.015a+\"
\n" ); document.write( "\"+.015a+=+2+\"
\n" ); document.write( "\"+a+=+133.333+\"
\n" ); document.write( "133.333 ounces of alcohol must be added
\n" ); document.write( "check:
\n" ); document.write( "\"+3.5+%2F+%28+100+%2B+a+%29+=+.015+\"
\n" ); document.write( "\"+3.5+%2F+%28+100+%2B+133.333+%29+=+.015+\"
\n" ); document.write( "\"+3.5+=+.015%2A233.333+\"
\n" ); document.write( "\"+3.5+=+3.5+\"
\n" ); document.write( "OK
\n" ); document.write( "
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