document.write( "Question 1006787: mixture of 3% disinfectant solution is to be made from 7% and 2% disinfectant solutions. How much of each solution should be used if 25 gallons of 3% solution are needed? \n" ); document.write( "
Algebra.Com's Answer #622843 by josgarithmetic(39618)\"\" \"About 
You can put this solution on YOUR website!
Same idea, all too common -
\n" ); document.write( "ONE variable for two-part mixture - video example\r
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\n" ); document.write( "\n" ); document.write( "These all can work the same way.
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