document.write( "Question 783751: how many liters of 25 percent acid solution must be added to 80 liters of 40 percent solution to obtain a solution that is 30 percent acid? \n" ); document.write( "
Algebra.Com's Answer #476899 by stanbon(75887)\"\" \"About 
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how many liters of 25 percent acid solution must be added to 80 liters of 40 percent solution to obtain a solution that is 30 percent acid?
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\n" ); document.write( "Equation::
\n" ); document.write( "acid + acid = acid
\n" ); document.write( "0.25x + 0.40*80 = 0.30(x+80)
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\n" ); document.write( "25x + 40*80 = 30x + 30*80
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\n" ); document.write( "-5x = -10*80
\n" ); document.write( "x = 160 liters (amt. of 25% solution to add)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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