Final answer:
Amy can buy a maximum of 3 manga books with her remaining money after purchasing shoes, as she has $65 left and each book costs $20.
Step-by-step explanation:
Amy had a starting amount of $235 to spend. After purchasing shoes for $170, she wants to buy manga books that are each priced at $20, including tax. To calculate the number of manga books Amy can buy, we need to first determine how much money she has left after buying the shoes.
- Starting amount: $235
- Amount spent on shoes: -$170
- Remaining amount: $235 - $170 = $65
Now that we know Amy has $65 remaining, we divide this by the price of one manga book:
- Price of one manga book: $20
- Number of manga books Amy can buy: $65 ÷ $20 = 3.25
Since Amy cannot buy a fraction of a book, she can buy a maximum of 3 manga books with her remaining money.