I Eugenia quiere comprar un departamento de interés social
que cuesta $320,520.00. En la inmobiliaria, le ofrecen: la
mitad al contado y el resto en 12 cuotas fijas iguales. ¿Cuál
es el valor de la cuota?

The answer is "13355 pesos per installment"

Step-by-step explanation:

The social representation division spends $320,520, But it offers half money, which means we'll pay for half at $320,520, which is equal to $160,260.  It divided into equal-sized fixed installment payments but we said, that we took half at $32,520, which would be equal to $13,355 pesos, which would be equal to $1,355 per installment.