If 20 out of 50 students prefer chocolate ice cream, we can use proportion to estimate how many students out of 1,000 would prefer chocolate ice cream:
20/50 = x/1000
We can cross-multiply to solve for x:
50x = 20,000
x = 400
So we can estimate that 400 out of 1,000 students would prefer chocolate ice cream.
To estimate how many servings of chocolate ice cream the cafeteria should prepare, we can assume that each student will have one serving. Therefore, the cafeteria should prepare approximately:
400 servings out of 1,000 students
= (400/1,000) * 1,000 servings
= 400 servings
Therefore, the cafeteria should prepare approximately 400 servings of chocolate ice cream.