document.write( "Question 445527: How do you make 25 mL of a 7.8% saline solution from two solutions of 5.6% saline and 18.8% saline? Round to the hundredths.
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document.write( "Could you please show step to step on how it was solved. Thanks! \n" );
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Algebra.Com's Answer #307119 by jorel1380(3719)![]() ![]() You can put this solution on YOUR website! x+y=25 \n" ); document.write( "5.6x+18.8y=25x7.8=195 \n" ); document.write( "5.6x+5.6y=140 \n" ); document.write( "13.2y=55 \n" ); document.write( "y=4.167 \n" ); document.write( "x=20.833 \n" ); document.write( "You need 20.833ml of 5.6% solution and 4.167ml of 18.8% solution.. \n" ); document.write( " \n" ); document.write( " |