Read the following context and answer the question.
Context: I was at the Car Pool getting Mrs. Astro 's car washed . I stood in front of the vending machine and decided I wanted a root beer . I reached for my wallet and started sifting through my receipts . I noticed I had two bills .
Question: Why did the person need to go through his wallet ?
Answer:


The person needed to find money to pay for the root beer .