THE RULES

[blumpkin blownuts]

no it actually does not, you have a fixed amount of solid material, no matter how much it expands from being inflated with gas that amount will not change.

You're on the right track... now consider that this constant volume of solid material is being manipulated to enclose three different volumes of gaseous material....

...As though the balloon were actually some sort of rubberized air tank.

[blumpkin blownuts]

thats when you get out of theoretical physics, which i'm a self study on, and into actual mathematical equations, which i quit school to avoid cause i hate that shit.

i didn't care about the exact answer, I cared about the theory. A+