document.write( "Question 1423: A nurse must add a 5% solution to 750 ml of a 30% to produce a 20% solution. How much of the 5% solution must be added? \n" ); document.write( "
Algebra.Com's Answer #488 by abhinav75(8)\"\" \"About 
You can put this solution on YOUR website!
let x volume is added...
\n" ); document.write( "initial volume is 750 ml = 0.75 litres
\n" ); document.write( "5x+ 30(0.75) = 20(x+0.75)
\n" ); document.write( "=> 5x + 22.5 = 20x + 15
\n" ); document.write( "=> 15x = 7.5
\n" ); document.write( "=> x = 0.5\r
\n" ); document.write( "\n" ); document.write( "therefore, 500 ml should be added of the 5% solution
\n" ); document.write( "
\n" );