SOLUTION: How many liters of an 8 % solution of salt should be added to a 20 % solution in order to obtain 480 liters of an 13 % solution?

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Question 834470: How many liters of an 8 % solution of salt should be added to a 20 % solution in order to obtain 480 liters of an 13 % solution?

Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Lesson named, "Mixing two concentrations for known amount of mixture", exactly what you need.

http://www.algebra.com/my/Mixtures%3A-All-in-Symbols.lesson?content_action=show_dev