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
Read the dialogue and choose the option with the correct noun to complete the sentence. —buenos días, ¿dónde está ana? —ana está en la oficina. —¿ustedes son los padres de la madre de ana? —sí, somos sus