document.write( "Question 1096712: A mixture of 8% disinfectant solution is to be made from 10% and 5% disinfectant solution. How much of each solution should be used if 25 gallons if 8% solution are needed? \n" ); document.write( "

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A mixture of 8% disinfectant solution is to be made from 10% and 5% disinfectant solution. How much of each solution should be used if 25 gallons if 8% solution are needed?
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\n" ); document.write( "t + f = 25 --- total solution
\n" ); document.write( "10t + 5f = 8*25 --- concentration
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