SOLUTION: HOW MUCH SALT MUST BE ADDED TO 60 KG OF A 20% SOLUTION OF SALT TO INCREASE IT TO 40% SOLUTION

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Question 360129: HOW MUCH SALT MUST BE ADDED TO 60 KG OF A 20% SOLUTION OF SALT TO INCREASE IT TO 40% SOLUTION
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi,

Let x represent the amount of salt added. Note: that is a 100% solution of salt.

.20*60kg + 1.00x = .40(60kg + x)***

solve for x

.6x = .20*60kg

x = 20 kg of salt needs to be added



checking out answer

12 + 20 = .40*80  = 32