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.
Definition of Variable Cost. Variable costs are expenses that fluctuate proportionally with the quantity of output. Variable costs are directly tied to the activities of producing volume, which rises when these activities increase and falls when activities decrease.This effect can be related to materials, labor, and sales commissions.he formula to calculate variable cost is: Total Variable Cost = Total Quantity of Output * Variable Cost Per Unit of Output. To recognize variable costs, it is important to understand how to categorize costs. Variable costs are those which do not remain constant, specifically when production activities fluctuate.