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.
Bake the potato at 325 degrees F for 90-105 minutes, or until the potato is yielding to the touch. Follow the same procedure to test for doneness, keeping in mind that if you are baking a large potato or more than one potato, the baking time will increase.