document.write( "Question 903927: (a) A nurse has two solutions that contain different concentrations of a certain medication. One is a 12.5% concentration and the other is a 5% concentration. How many cubic centimeters of each should she mix to obtain 20 cubic centimeters of an 8% concentration? \r
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Algebra.Com's Answer #548416 by richwmiller(17219)![]() ![]() You can put this solution on YOUR website! a+b=20, \n" ); document.write( "0.125*a+0.05*b=0.08*20 \n" ); document.write( "a=20-b \n" ); document.write( "0.125*(20-b)+0.05*b=1.6 \n" ); document.write( "2.5-0.125b+0.05*b=1.6 \n" ); document.write( "-0.075*b=-0.9 \n" ); document.write( "b=12.0 \n" ); document.write( "a=20-b \n" ); document.write( "a=8 cc at 12.5% b=12 cc at 5% \n" ); document.write( "check \n" ); document.write( "0.125*8+0.05*12=0.08*20 \n" ); document.write( "1.0+0.6=1.6 \n" ); document.write( "1.6=1.6 \n" ); document.write( "ok \n" ); document.write( " \n" ); document.write( " |