SOLUTION: how much of a 14% acid solution should be added to 20 ml of a 8% acid solution to increase it to a 12% acid solution

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Question 723767: how much of a 14% acid solution should be added to 20 ml of a 8% acid solution to increase it to a 12% acid solution
Answer by josgarithmetic(39616) About Me  (Show Source):
You can put this solution on YOUR website!
p = how much of the 14% acid to add. Note, I changed your word, "dilute" to "increase", because of the acid concentration you chose to add to the other acid concentration. If this is not correct then you need to rewrite your question carefully.
highlight%28%2814%2Ap%2B8%2A20%29%2F%28p%2B20%29=12%29, and solve for p.