Ruling Donphan and Aqua+Electric Effect

[Vom]

What would happen if my opponent's Stage 1 Pokémon (affected by both Aqua Effect and Electric Effect) attacked my Active Donphan? Would Weakness come before Resistance, or the other way around?

Spoiler: Donphan

Spoiler: Aqua Effect

Spoiler: Electric Effect

 

[My Little Keldeo]

Weakness is always applied before Resistance, so the damage would first be doubled, and then you would subtract 20.

 

[Vom]

Weakness is always applied before Resistance, so the damage would first be doubled, and then you would subtract 20.

Oh, I had no idea. Thanks!