document.write( "Question 387048: please help me slove this word problem: A photographer is mixing a 5% acetic acid solution with a 10% acetic acid solution to get 5 liters of a 7% solution. How many liters of the 5% and 10% solutions should she add? Thank you!! \n" ); document.write( "
Algebra.Com's Answer #273578 by Fombitz(32388)\"\" \"About 
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Let A be the amount of 5% solution and B the amount of 10% solution.
\n" ); document.write( "1.\"A%2BB=5\"
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\n" ); document.write( "\"5A%2B10B=7%285%29\"
\n" ); document.write( "2.\"A%2B2B=7\"
\n" ); document.write( "Subtract eq. 1 from eq. 2,
\n" ); document.write( "\"A%2B2B-A-B=7-5\"
\n" ); document.write( "\"highlight%28B=2%29\"liters
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\n" ); document.write( "Then from eq. 1,
\n" ); document.write( "\"A%2B2=5\"
\n" ); document.write( "\"highlight%28A=3%29\"liters
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