SOLUTION: how many ml of 18% acid solution must be added to how many ml of 2% acid solution to create 180ml of 9% acid solution

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Question 931925: how many ml of 18% acid solution must be added to how many ml of 2% acid solution to create 180ml of 9% acid solution
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
Mixing two concentrations for known amount of mixture
http://www.algebra.com/my/Mixtures%3A-All-in-Symbols.lesson?content_action=show_dev