SOLUTION: How many liters of a 80​% acid solution must be mixed with a 15​% acid solution to get 455 L of a 70​% acid​ solution?

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Question 1024708:
How many liters of a 80​% acid solution must be mixed with a 15​% acid solution to get 455 L of a 70​% acid​ solution?
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
x of 80%;
455-x of 15%;

%2880x%2B15%28455-x%29%29%2F455=70;
Solve for x and that is how much liters of the 80%; and by difference get the 15%.

You can also do this using two variables.