Answer:

Explanation:
To find the greatest amount of hats that can be bought with $57, we need to divide the total amount of money by the cost of each hat. This will give us the maximum number of hats that we can buy.
Step 1: Divide the total amount of money by the cost of each hat.

Since we cannot buy 0.4 of a hat:
The greatest amount of hats that can be bought with $57 is 11 hats.