SOLUTION: How many liters of water must be added to 50 L of a 30% acid solution in order to produce a 20% acid solution?

Question 357518: How many liters of water must be added to 50 L of a 30% acid solution in order to produce a 20% acid solution?
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!



Hi,

Let x be the water added

.30*50 = .20(50 L +x)

simplify and Solve

.30*50 - .20*50 L = .20x

.10*50L = .20x

25L = x

25 liters of water would need to be added

checking our answer

15 = .20(75) 

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