document.write( "Question 567616: A Chemist needs 120 milliliters of a 21% solution but only has 3% and 27% solutions available. Find how many milliliters of 27% solution should be used to the desired solution.
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Algebra.Com's Answer #366658 by Alan3354(69443)\"\" \"About 
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A Chemist needs 120 milliliters of a 21% solution but only has 3% and 27% solutions available. Find how many milliliters of 27% solution should be used to the desired solution.
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\n" ); document.write( "t = amount of 3%
\n" ); document.write( "s = amount of 27%
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\n" ); document.write( "t + s = 120
\n" ); document.write( "3t + 27s = 120*21
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\n" ); document.write( "Can you do the rest?
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