Applications :: IWork Numbers - Formula With Category

I have a list of expenses and there are columns such as "Description, Cost" the usual, but I also made one named "Type" that is populated with either "Business, Personal," or "Fixed Expenditures".

I would like, then, to make another table that links to the first with three rows. Each one adds the total cost of Business, Personal, and Fixed Expenditures. How can I accomplish this?

I want to divide the expenses into expenses types and create a sum for each type.

Basically, it categorizes the expenses and puts them in three different totals: one for each "Type" of expense.