To calculate these costs, you must consider these aspects of the manufacturing environment: Product costing (detailed information) for material, labor, and overhead. Cost reporting (what does the item really cost to produce). Variance reporting (actual versus standard costs).
In a pot, heat water until it boils. Once it boils, add in your potatoes. After about 20 minutes, you can try forking in your potatoes to see how tender it is. Now, another factor on the length of cooking potatoes is how big your potatoes are. Of course, if you use really small potatoes, they will become tender easily.
Place the potatoes in a large saucepan. Add enough cold water to cover the potatoes by at least 1 inch. Add salt. Turn the heat to high and bring the water to a boil. Reduce the heat to low to maintain a simmer, and cover. Cook for 15 to 20 minutes, or until you can easily poke through them with a fork.