To solve this problem you must apply the proccedure shown below:
1. Let's make the conversion from 3 pints to cups:
[tex](3pints)(\frac{2cups}{1pint})=6cups[/tex]
2. You have that 1 cup of frozen peaches weighs about 6 ounces and you obtained that 3 pints are 6 cups, therefore, let's make the conversion from 6 cups to ounces:
[tex](6cups)(\frac{6ounces}{1cups})=36ounces[/tex]
3. Finally you can divide 36 ounces by 12 ounces:
[tex]\frac{36ounces}{12ounces}=3[/tex]
Therefore, the answer is: Three (3) 12 ounces bags of frozen peaches.