SOLUTION: Two liters of 40% acid are mixed with 4 liters of another acid to form a 50% acid solution. What is the strength of the added acid?

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Question 249696: Two liters of 40% acid are mixed with 4 liters of another acid to form a 50% acid solution. What is the strength of the added acid?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
.4*2+4*a=.50*(6)
Solve for a and convert to percent