document.write( "Question 557812: How many liters of a 40% acid solution must be added to 100 liters of a 25% solution to obtain a 30% solution? \n" ); document.write( "
Algebra.Com's Answer #362778 by stanbon(75887)\"\" \"About 
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How many liters of a 40% acid solution must be added to 100 liters of a 25% solution to obtain a 30% solution?
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\n" ); document.write( "acid + acid = acid
\n" ); document.write( "0.40x + 0.25*100 = 0.30(x+100)
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\n" ); document.write( "40x + 25*100 = 30x + 30*100
\n" ); document.write( "10x = 500
\n" ); document.write( "x = 50 liters (amt. of 40% solution needed)\r
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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