document.write( "Question 758822: a chemist needs 90 milliliters of a 26% solution but has only 21% and 30% solutions available. Find how many milliliters of each that should be mixed to get the desired solution \n" ); document.write( "
Algebra.Com's Answer #461676 by Alan3354(69443)\"\" \"About 
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a chemist needs 90 milliliters of a 26% solution but has only 21% and 30% solutions available. Find how many milliliters of each that should be mixed to get the desired solution
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\n" ); document.write( "s = amount of 21%
\n" ); document.write( "t = amount of 30%
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\n" ); document.write( "s + t = 90 (total solution)
\n" ); document.write( "21s + 30t = 26*90 (total of what's in it)
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