[Jolla]

here you go:

If it is 0 degrees and it gets twice as cold how cold is it?

I don’t know.

[Telepathic Intruder]

There is no such thing as twice as cold unless you mean half as hot. But doing any math with temperature means you have to use the Kelvin scale, or any which starts at absolute zero, not the freezing point of water or something.

[Hang'emAll]

Fun question will have to use it on friends.

My answer is convert between degrees F and C. Mathematically it would workout.