Greetings, I am preparing for an exam, and I am having a difficult understanding the following:

1.How do you calculate amount assigned to a product based on the activity?

2.How do you calculate activity rates and then assign costs?

3.How do you calculate assignment of costs based on proportion percentage?

4. Which types of firms that would use process costing?

5. What is the difference between Variable and Fixed cost?

6. What are considered out of pocket expenses?