Calories in Tea. Tea comes from the Camellia sinensis plant. Even though you'll see many varieties of tea on store shelves, there are only four major categories of tea: white tea, green tea, oolong tea and black tea. The difference between each type is the degree to which each type of leaf is oxidized or fermented.
Mixed or semi-variable cost: A cost that has the characteristics of both variable and fixed cost is called mixed or semi-variable cost. For example, the rental charges of a machine might include $500 per month plus $5 per hour of use. The $500 per month is a fixed cost and $5 per hour is a variable cost.
A variable cost is a cost that varies in relation to either production volume or services provided. If there is no production or no services are provided, then there should be no variable costs.