下表显示了一组 220 名学生在一次竞赛中的得分分布情况。

分数	学生人数
70	24
75	44
80	108
85	36
90	8

这组学生中有 20% 晋级了下一轮。晋级下一轮所需的最低分数是多少？

1. Calculate the number of students who qualified for the next round.

Number of students who qualified = $20\% \times 220 = \frac{20}{100} \times 220 = 44$

2. Determine the minimum score by counting the top 44 students from the highest marks downwards.

Students scoring 90 marks: $8$
Students scoring 85 marks: $36$
Total students scoring 85 or 90 marks = $8 + 36 = 44$
Since exactly 44 students scored 85 or above, the minimum score needed to qualify is 85.