document.write( "Question 907384: how many liters of a 70% alcohol solution must be mixed with 40 liters of a 90% solution to get a 80% solution? \n" ); document.write( "
Algebra.Com's Answer #550317 by ewatrrr(24785)\"\" \"About 
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x amount of 70% solution
\n" ); document.write( ".70x + .90(40L) = .80(40L + x)
\n" ); document.write( " .10(40L)/.10 = x = 40L, amount of 70% solution
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