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.
Cooking times will vary depending on the size of the potato and the power of the microwave. Most medium to large potatoes will take between 8-12 minutes to cook at full power. Try putting the potato in for 5 minutes to begin with, then take it out and turn it over so that both sides cook evenly. Place it back in the microwave for another 3-5 minutes, depending on how soft it is already.