document.write( "Question 481343: What quantity of 60 percent acid solution must be mixed with a 25 per cent solution to produce 504 mL of a 50 percent solution? \n" ); document.write( "
Algebra.Com's Answer #329628 by Alan3354(69443)\"\" \"About 
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s = 60%
\n" ); document.write( "t = 25%
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\n" ); document.write( "s + t = 504
\n" ); document.write( "0.6s + 0.25t = 0.5*504
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\n" ); document.write( "Solve for s & t
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