Mathematics, 14.07.2019 10:30 biasmi70

Achemist mixes 4 liters of one acid solution with 10 liters of a 40% solution, resulting in a 30% acid solution. what is the value of x, the acid concentration of the forst solution?

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Achemist mixes 4 liters of one acid solution with 10 liters of a 40% solution, resulting in a 30% ac...