Are they having other vegetables. If so, then about 18 pounds of potato.
Fifteen pounds of red potatoes can typically serve around 30-40 people as a side dish, depending on portion sizes. If serving as a main component of a meal, it may not be enough for 70-75 people. To adequately feed that many, you would likely need at least 30-35 pounds of potatoes. Adjustments can be made based on the overall menu and other dishes served.
Ask yourself (in the context of the meal overall) how may potatoes could YOU eat. Once you have that in your head you can multiply the number by the number of guests you are intending to feed.
it takes approximately 20 cases of beef patties.
it depends on their apetite.
That depends on the recipe you use.
75 pounds of food a day
To feed 75 people cheesy potatoes, a good estimate is about 1/2 to 3/4 cup of cheesy potatoes per person, depending on whether it's a side dish or the main focus of the meal. This would translate to approximately 37 to 56 cups of cheesy potatoes in total. If you prepare around 50 cups, that should adequately serve your group, allowing for some extra in case of larger appetites.
165.35 pounds
75 pounds = 34.0194277 kilograms.
75 pounds is 5.35 stone
75 g = 0.1653 lbs.
About 0.165347 pounds.