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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 first solution
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—hola. mi nombre es rosario. yo de quito. ¿cómo tu amigo pablo? soy; eres eres; eres soy; es eres; es
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Son diferentes; no son las mismas....
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