Best Riddles and Answers

Question: When is 1500 plus 20 and 1600 minus 40 the same thing?

Question: You wear me every day but you never put me on.
I will change colors if you leave me out too long.

What am I?

Question: What cheese isn't yours?

Question: A container that takes no keys,
but a golden delight lies within me.

What am I?

Question: Flies hate us with a passion, who are we?