Let
x------> Jorge's age
y-----> Jorge's brother's age
we know that
-----> equation A
-----> inequality B
substitute the equation A in the inequality B
![[y-1]+y \geq 25](https://img.qammunity.org/2017/formulas/mathematics/high-school/1dvlnjsb11hgo9bj6dje1ludh0w3fl1hil.png)


The minimum value of y is equal to
years
therefore
the answer is
the youngest age Jorge's brother is
years