New Mind Stretchers

Bonjour peeps!
watz up?

Here are some more mind stretchers, due to peeps' requests.

Mind stretcher numero uno: Joe was at base camp. He woke early one morning and but on a sweater. He decided to take a walk. He walked a mile south and saw a bear. He was really scared. He slipped and ran a mile west. Then he decided that the bear was nowhere to be seen, then he walked a mile north and returned to base camp. He took off his sweater and ate some canned salami with his friends Bob and Sally.
The question: What color was the bear and why?

Mind stretcher numero dos: How many times can you take fifteen away from forty-five? Why?

Mind stretcher numero tres: A woman named katherine rode to town on Wednesday. She stayed in town for 3 days, then rode back to her house in the suburbs on Wednesday. How is this possible?

I'll give out the answers soon! If you get them ahead of time (like my cousin), email me and you will go on my HALL OF FAME!

Amethyst