SOLUTION: How many kilograms of salt must be added to 24 kg of a 20% salt solution in order to increase the concentration of salt to 40%?

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 Question 426625: How many kilograms of salt must be added to 24 kg of a 20% salt solution in order to increase the concentration of salt to 40%? Answer by ewatrrr(10682)   (Show Source): You can put this solution on YOUR website!``` Hi Let x represent the amount of pure salt(100%) added... Mixing to form (24kg+x)of 40% solution .20*24kg + x = .40(24kg+x) .60x = .20*24kg x = .20*24kg/.60 x = 8kg, the amount of pure salt that needs to be added CHECKING our Answer*** 4.8kg + 8kg = 12.8kg = .4*32kg = 12.8kg ```