document.write( "Question 902315: How many liters of a 85% acid solution must be added to 12 liters of a 25% acid solution to produce a 49% acid solution? \n" ); document.write( "
Algebra.Com's Answer #547223 by stanbon(75887)\"\" \"About 
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How many liters of a 85% acid solution must be added to 12 liters of a 25% acid solution to produce a 49% acid solution?
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\n" ); document.write( "Equation:
\n" ); document.write( "acid + acid = acid
\n" ); document.write( "0.85x + 0.25*12 = 0.49(x + 12
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\n" ); document.write( "85x + 25*12 = 49x + 49*12
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\n" ); document.write( "36x = 24*12
\n" ); document.write( "x = (2/3)12
\n" ); document.write( "x = 8 liters (amt. of 85% solution needed)
\n" ); document.write( "12-x = 4 liters (amt. of 25% solution needed)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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