A-A+
If a student never skips a class and gets an o
问题详情
If a student never skips a class and gets an overall mark of 80 (out of 100) for assignments, what is the minimum mark that the student must obtain in the final exam in order to get 85 (out of 100) as the final mark of the course？
A．80
B．85
C．90
D．95请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：C
解析：推论题，第五段介绍了课程最终的考核方式最终分数(finalmark)=考勤分(participation)×10%+作业分(assignments)×60%+期末考试分(finaltest)×30％，照此公式，再结合题目要求(全勤分100分，作业分80分)，可以得出要得到85分的最终成绩，应该在期末考试中拿到(85-100×10％-85×60％)÷30％=90分，故选C
