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.
Examples of variable costs include direct costs such as raw materials and direct labour. Numerical example of variable costs. A factory is producing widgets. It takes 4m2 to make one widget and it costs $2 per square metre. If the factory makes 50 widgets if costs $400, if the factory makes 100 widgets it costs $800.