document.write( "Question 270734: How many quarts of a 20% salt solution must be mixed with 15 quarts of a 35% salt solution to obtain a mixture that is 25% salt? \n" ); document.write( "
Algebra.Com's Answer #198266 by CharlesG2(834)\"\" \"About 
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How many quarts of a 20% salt solution must be mixed with 15 quarts of a 35% salt solution to obtain a mixture that is 25% salt? \r
\n" ); document.write( "\n" ); document.write( "% * amount mixture A + % * amount mixture B = % * amount mixture C
\n" ); document.write( "20% * x + 35% * 15 = 25% * (x + 15)
\n" ); document.write( "0.20x + 0.35 * 15 = 0.25x + 0.25 * 15
\n" ); document.write( "0.20x + 5.25 = 0.25x + 3.75 (rearrange)
\n" ); document.write( "1.5 = 0.05x
\n" ); document.write( "30 quarts = x\r
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