It refers to the total cost of production.

The difference between how much an item costsyou, and how much you sell that item for. 

Arrange the following kitchen material according to durability. (first is the most durable)

Preliminary tools are basic tools that are used specifically in the preparation of food. 

What are the types of costing? 

A tool used to mixed and puree food. It is very useful in making smoothies.