document.write( "Question 972174: A chemist mixes 20% HCl with 40% HCl to make 15 liters of solution that is 25% HCl. How many liters of each does he need?
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Algebra.Com's Answer #594539 by Alan3354(69443)\"\" \"About 
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t = amt of 20%
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\n" ); document.write( "t + f = 15 (total solution)
\n" ); document.write( "20t + 40f = 25*15 (total acid)
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