document.write( "Question 449382: A 5% solution of a drug is to be mixed with some 15% solution and some 10% solution to get 20 ml of 8% solution. The amount of 5% solution used must be 2 ml more than the sum of the other two solutions. Set up a system of equations that could be used to determine the number of ml of each solution that should be used. \n" ); document.write( "
Algebra.Com's Answer #309127 by stanbon(75887)\"\" \"About 
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A 5% solution of a drug is to be mixed with some 15% solution and some 10% solution to get 20 ml of 8% solution. The amount of 5% solution used must be 2 ml more than the sum of the other two solutions. Set up a system of equations that could be used to determine the number of ml of each solution that should be used.
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\n" ); document.write( "v + f + t = 20
\n" ); document.write( "0.05v + 0.15f + 0.10t = 0.08*20
\n" ); document.write( "v = f+t+2
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\n" ); document.write( "Rearrange:
\n" ); document.write( "v + f + t = 20
\n" ); document.write( "5v + 15f + 10t = 8*20
\n" ); document.write( "v - f - t = -2
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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