How fast is the speed of dark?

[Ross]

I thought of the "You can divide by zero." when I read this strange question.

If it's 0 degrees F outside, and it's suppose to be twice as cold tomorrow, what will the temperature be? (Meaning it'll be half the temperature it was, but you can't divide by 0... or can you.)

It was a rhetorical question, but I wanted to answer it anyways. Since in math, you can't divide by 0, but since it's in degrees, or ? for people who like ALT codes, you can. Due to the fact that there's more than 1 way to tell the ? of something.

0? F = -17.7? C
-17.7? C * 2 = -35.4? C
-35.4? C = -31.72? F

So, half of 0? F is -31.72? F.