If shirts are priced at $0.75 each, how many shirts can Abby buy with $15?

To determine how many shirts Abby can buy, you need to divide the total amount of money she has by the price of each shirt. In this case, Abby has $15, and each shirt costs $0.75.

First, you perform the division:

15 ÷ 0.75 = 20

This calculation shows that Abby can purchase a total of 20 shirts with her available funds. The reasoning here is straightforward; by dividing the total amount of money by the cost of each item, you obtain the quantity of items she can afford.

Understanding this process is crucial for real-world applications in budgeting and shopping, as it helps to manage finances effectively. This principle can be applied in various scenarios where you're making purchasing decisions based on budget constraints.