A Riddle

[bobquasit]

Here's something that drifts in and out of my mind every so often when I'm doing a particular everyday activity. You might put it in the form of a riddle:

Under what circumstances is this equation true?

40 = 0

Now, I'll admit that this is ridiculously difficult, because I haven't given you enough information. So I'll write an easier equation in white text below. Ctrl-A or click, hold and drag across the area below to see it.

60 + 40 = 60

I'm sure someone (maybe everyone) will get this, but if not I'll see if I can come up with a still easier equation...and in any case, I'll post the answer in a week.

Comments

[klyfix.livejournal.com]

I really have no clue as to the logic of the equation. Granted that I'm not mathematically inclined although I can do basic math and have an extremely rudimentary understanding of algebra maybe, but I don't see it.