Question

1. las 2/5 partes de un batallón militarizado muere en la guerra civil. se sabe que el total de militares al principio era de 1900. ¿cuántos militares han quedado vivos? _______

Explanation:

Step1: Find the fraction of survivors

The fraction of those who died is $\frac{2}{5}$, so the fraction of survivors is $1 - \frac{2}{5}=\frac{3}{5}$.

Step2: Calculate the number of survivors

Multiply the total number of soldiers (1900) by the fraction of survivors ($\frac{3}{5}$). So, $1900\times\frac{3}{5} = \frac{1900\times3}{5}= 1140$.

Answer:

1140