SOLUTION: How many liters of a 50% acid solution must be added to 10 liters of a 15% acid solution to produce a 25% acid solution?

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Question 408567: How many liters of a 50% acid solution must be added to 10 liters of a 15% acid solution to produce a 25% acid solution?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi

Let x represent amount of the 50% solution

Question states***

 .50x + .15*10L = .25(10L + x)

     .25x = .10*10L

        x = 4L  

CHECKING our Answer***

.50*4 + .15*10 = 2 + 1.5 = 3.5 = .25*14