Good Riddles

Question: someone came into my shop and stole 100 dollars from the register without my knowledge. the person came back 5 minutes later with the same 100 dollars and bought 70 dollars in items and i gave him back 30 dollars change. How much did i lose?

Question: What did Robin Hood say, when Little John fired at him?

Question: I am dark and can never be light, but I can be lit. What am i?

Question: What goes black when you buy it, red when you use it, and goes white when you throw it away?

Question: You're in a unbreakable room. You only have scissors and a 2-feet long rope and logic. There's a small window, big enough only to put one item through. The rope nor the scissors doesn't fit into the window. How do you escape?