document.write( "Question 355465: a solution containing 28% fungicide is to be mixed with a solution containing 40% fungicide to make 300L of a solution containing 36% fungicide. how much of each solution should be used? \n" ); document.write( "
Algebra.Com's Answer #254007 by Fombitz(32388)\"\" \"About 
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Let A be the amount of 28% fungicide and let B be the amount of 40% fungicide.
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\n" ); document.write( "Volume:
\n" ); document.write( "1.\"A%2BB=300\"
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\n" ); document.write( "Concentration:
\n" ); document.write( "\"28A%2B40B=36%28300%29\"
\n" ); document.write( "2.\"7A%2B10B=2700\"
\n" ); document.write( "Multiply eq. 1 by (-10) and add to eq. 2 to eliminate B and solve for A.
\n" ); document.write( "\"-10A-10B%2B7A%2B10B=-3000%2B2700\"
\n" ); document.write( "\"-3A=-300\"
\n" ); document.write( "\"highlight%28A=100%29\"liters
\n" ); document.write( "Then from eq. 1,
\n" ); document.write( "\"100%2BB=300\"
\n" ); document.write( "\"highlight%28B=200%29\"liters
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