what is a variable cost
Variable costs are costs that change in proportion to the good or service that a business produces. Variable costs are also the sum of marginal costs over all units produced. They can also be considered normal costs.Fixed costs and variable costs make up the two components of total cost.Direct costs, however, are costs that can easily be associated with a particular cost object. However, not all variable costs are direct costs.hey can also be considered normal costs. Fixed costs and variable costs make up the two components of total cost. Direct costs, however, are costs that can easily be associated with a particular cost object.