document.write( "Question 793497: a photographer wants to mix 3 liters of a 4% acetic acid solution with a 15% solution to get a 9% solution. How many liters of 15% solution should be used to obtain 9% solution?
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Algebra.Com's Answer #480383 by stanbon(75887)\"\" \"About 
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a photographer wants to mix 3 liters of a 4% acetic acid solution with a 15% solution to get a 9% solution. How many liters of 15% solution should be used to obtain 9% solution?
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\n" ); document.write( "Equation::
\n" ); document.write( "acid + acid = acid
\n" ); document.write( "0.04*3 + 0.15x = 0.09(3+x)
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\n" ); document.write( "4*3 + 15x = 9*3 + 9x
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\n" ); document.write( "6x = 5*3
\n" ); document.write( "x = 2.5 liters (amt. of 15% solution needed)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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