document.write( "Question 918226: How much salt must be added to 60 Ltr. of a 20% solution of salt to increase it to 40% solution of salt? \n" ); document.write( "
Algebra.Com's Answer #556984 by richwmiller(17219)\"\" \"About 
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x+.2*60=.4(x+60)
\n" ); document.write( "x+.2*60=.4x+.4*60
\n" ); document.write( "x+12=.4x+24
\n" ); document.write( ".6x=12
\n" ); document.write( "6x=120
\n" ); document.write( "x=20 liters of pure salt
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