If you allow 6oz of sausage per person then you will need at least 11lb 4oz.
The rough portion estimate for serving meat at a party is one half pound per person. This is on the high side of the average portion. If you want to be more on the safe side, if you are worrying about falling short, add another ten percent. So, for fifty people, at one half pound each, you would need 25 pounds of sausage. Ten percent more would be 27.5 pounds. Depending on what else you will be serving, you might be able to reduce this to 15 to 20 pounds. If the sausage is an appetizer, reduce servings to 3-4 ounces per guest. (50 x 4 = 200 ounces or 12.5 pounds).
30
3-4 pounds would be adequate.
Around 40% of the people surveyed prefer bacon to sausage.
35
Approximately 7.5 pounds
The typical serving size is 8oz, so 30 pounds.
30 pounds = 13.61 kilograms.
There are 30 pounds in 480 ounces.
13.6 kilograms are 30 pounds.
30 oz = 1.875 pounds.
I would make 30 pounds