document.write( "Question 956136: How many liters of 50% alcohol solution and 20% alcohol solution must be mixed to obtain 18 liters of 30% alcohol? Show your work. \n" ); document.write( "
Algebra.Com's Answer #584134 by Alan3354(69443)\"\" \"About 
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Do it like this one. Only the numbers are different.
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\n" ); document.write( "\n" ); document.write( "Amanda wants to make 8 gal. of a 20% saline solution by mixing together a 56%
\n" ); document.write( "saline solution and a 8% saline solution. How much of each solution must she
\n" ); document.write( "use?
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\n" ); document.write( "e = amount of 8%
\n" ); document.write( "f = amount of 56% \r
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\n" ); document.write( "e+ f = 8 (total solution)
\n" ); document.write( "8e + 56f = 20*8 (total saline) \r
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\n" ); document.write( "e+ f = 8
\n" ); document.write( "e + 7f = 20
\n" ); document.write( "------------ Subtract
\n" ); document.write( "-6f
\n" ); document.write( "= -12
\n" ); document.write( "f = 2
\n" ); document.write( "e = 6
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