TRIVIA / Puzzle # 1

Question

Hi guys,

I've been reading some trivia from various sources and I find it awesome. sugoi! I'm doing those instead of reading documents, which is good hehehe.
Here's one.

1. If you have two buckets, one with red paint and the other with blue paint, and you take one cup from the blue bucket and poor it into the red bucket. Then you take one cup from the red bucket and poor it into the blue bucket. Which bucket has the highest ratio between red and blue? Prove it mathematically.