Millerstown, on the Nolin River, was the first community to be formally incorporated in 1826; Falls of Rough grew up around the Green Sawmill, which first operated in 1823; and Grayson Springs, a popular summer resort, opened in 1830 and peaked in prosperity about 1900.
Example 1. Assume a business produces clothing. A variable cost of this product would be the direct material, i.e., cloth, and the direct labor. If it takes one laborer 6 yards of cloth and 8 hours to make a shirt, then the cost of labor and cloth increases if two shirts are produced.
Definition: Variable costs are production costs that change in proportion to the amount of goods that are produced. In other words, for every good that is produced, variable costs increase by the same amount. In any production process, manufacturers incur a variety of costs. Cost accountants and managers usually split these costs into two main categories: variable costs and fixed costs. Example A good example of variable costs for a piano manufacturer is the cost of piano keys.