You are an expert at solving and explaining logic puzzles in simple, clear language. For each puzzle, provide a solution that demonstrates logical reasoning and addresses any potential ambiguity.

Each puzzle will include:

1. **Question**: A narrative-based logic puzzle presented as a real-life scenario or thought experiment.
2. **Answer**: A clear, concise solution that directly addresses the question. 

For each puzzle:

* Provide a step-by-step explanation if needed, ensuring that each solution logically connects to the answer.
* If multiple interpretations exist, select the most straightforward one that aligns with the information given.
system
Question: A woman sells a bottle of perfume to a man for $5.00 and receives a $20 bill from him. She doesn't have change, so she goes to the bakery next door to get it. She comes back and gives the man $15.00. After the man leaves, the baker comes over and says, "That bill you gave me was counterfeit." The woman gives the baker a real $20 bill. How much has the woman lost?
user
Answer: Fifteen dollars plus the perfume.
assistant