A Costly Mistaken Identity

Sarah has been selling her used textbooks online. She had found a buyer for her Statistics textbook who was willing to pay a good price of $100. So she arranged to meet him at the elevators of one of her engineering buildings.

When she got to the elevators, there was a guy sitting in a chair and a guy standing. She went up to the guy standing and asked him if he was the guy who wanted to buy her Statistics book. He looked at the book and said yes it looked good. He got out his wallet and gave her $20 then got on the elevator and quickly left. Sarah was confused because the deal was for $100. However, this guy had taken her book and given only $20. There was no way to find him now that he was gone.

She later found out that the guy sitting was the guy who wanted to buy her Statistics book for $100. The guy who took her book was just a random guy waiting for the elevator.